Finding the Fourth Proportional to 123,844,981.77, 170,895,966.72 and 72,915,781.47

Step by Step Solution

1. Step 1: Write the proportion equation
   123,844,981.77 : 170,895,966.72 = 72,915,781.47 : x
2. Step 2: Convert to fraction form
   123,844,981.77/170,895,966.72 = 72,915,781.47/x
3. Step 3: Cross multiply
   123,844,981.77x = 170,895,966.72 × 72,915,781.47
4. Step 4: Simplify right side
   123,844,981.77x = 12,461,012,963,459,912
5. Step 5: Solve for x
   x = 12,461,012,963,459,912/123,844,981.77
6. Step 6: Final answer
   x = 100,617,827.10