Finding the Fourth Proportional to 663,141,088,815.72, 915,134,695,479.90 and 358,646,744,796.54

Step by Step Solution

1. Step 1: Write the proportion equation
   663,141,088,815.72 : 915,134,695,479.90 = 358,646,744,796.54 : x
2. Step 2: Convert to fraction form
   663,141,088,815.72/915,134,695,479.90 = 358,646,744,796.54/x
3. Step 3: Cross multiply
   663,141,088,815.72x = 915,134,695,479.90 × 358,646,744,796.54
4. Step 4: Simplify right side
   663,141,088,815.72x = 328,210,079,584,239,061,303,296
5. Step 5: Solve for x
   x = 328,210,079,584,239,061,303,296/663,141,088,815.72
6. Step 6: Final answer
   x = 494,932,503,987.01