Finding the Fourth Proportional to 78,971,980.32, 118,509,120.90 and 42,605,472.96

Step by Step Solution

1. Step 1: Write the proportion equation
   78,971,980.32 : 118,509,120.90 = 42,605,472.96 : x
2. Step 2: Convert to fraction form
   78,971,980.32/118,509,120.90 = 42,605,472.96/x
3. Step 3: Cross multiply
   78,971,980.32x = 118,509,120.90 × 42,605,472.96
4. Step 4: Simplify right side
   78,971,980.32x = 5,049,137,146,018,321
5. Step 5: Solve for x
   x = 5,049,137,146,018,321/78,971,980.32
6. Step 6: Final answer
   x = 63,935,805.15