Finding the Fourth Proportional to 72,419,518.89, 99,940,830.12 and 39,381,700.23

Step by Step Solution

1. Step 1: Write the proportion equation
   72,419,518.89 : 99,940,830.12 = 39,381,700.23 : x
2. Step 2: Convert to fraction form
   72,419,518.89/99,940,830.12 = 39,381,700.23/x
3. Step 3: Cross multiply
   72,419,518.89x = 99,940,830.12 × 39,381,700.23
4. Step 4: Simplify right side
   72,419,518.89x = 3,935,839,812,523,195
5. Step 5: Solve for x
   x = 3,935,839,812,523,195/72,419,518.89
6. Step 6: Final answer
   x = 54,347,776.30