Finding the Fourth Proportional to 72,356,669.46, 99,852,834.42 and 39,316,918.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,356,669.46 : 99,852,834.42 = 39,316,918.50 : x
2. Step 2: Convert to fraction form
   72,356,669.46/99,852,834.42 = 39,316,918.50/x
3. Step 3: Cross multiply
   72,356,669.46x = 99,852,834.42 × 39,316,918.50
4. Step 4: Simplify right side
   72,356,669.46x = 3,925,905,752,885,135
5. Step 5: Solve for x
   x = 3,925,905,752,885,135/72,356,669.46
6. Step 6: Final answer
   x = 54,257,690.16