Finding the Fourth Proportional to 93,010,851.51, 128,377,755.53 and 72,061,447.29

Step by Step Solution

1. Step 1: Write the proportion equation
   93,010,851.51 : 128,377,755.53 = 72,061,447.29 : x
2. Step 2: Convert to fraction form
   93,010,851.51/128,377,755.53 = 72,061,447.29/x
3. Step 3: Cross multiply
   93,010,851.51x = 128,377,755.53 × 72,061,447.29
4. Step 4: Simplify right side
   93,010,851.51x = 9,251,086,863,333,602
5. Step 5: Solve for x
   x = 9,251,086,863,333,602/93,010,851.51
6. Step 6: Final answer
   x = 99,462,446.73