Finding the Fourth Proportional to 163,812,118.78, 245,752,687.83 and 53,139,147.10

Step by Step Solution

1. Step 1: Write the proportion equation
   163,812,118.78 : 245,752,687.83 = 53,139,147.10 : x
2. Step 2: Convert to fraction form
   163,812,118.78/245,752,687.83 = 53,139,147.10/x
3. Step 3: Cross multiply
   163,812,118.78x = 245,752,687.83 × 53,139,147.10
4. Step 4: Simplify right side
   163,812,118.78x = 13,059,088,228,818,750
5. Step 5: Solve for x
   x = 13,059,088,228,818,750/163,812,118.78
6. Step 6: Final answer
   x = 79,719,915.27