Finding the Fourth Proportional to 72,259,085.61, 99,719,024.82 and 40,897,132.29

Step by Step Solution

1. Step 1: Write the proportion equation
   72,259,085.61 : 99,719,024.82 = 40,897,132.29 : x
2. Step 2: Convert to fraction form
   72,259,085.61/99,719,024.82 = 40,897,132.29/x
3. Step 3: Cross multiply
   72,259,085.61x = 99,719,024.82 × 40,897,132.29
4. Step 4: Simplify right side
   72,259,085.61x = 4,078,222,149,893,333
5. Step 5: Solve for x
   x = 4,078,222,149,893,333/72,259,085.61
6. Step 6: Final answer
   x = 56,438,883.99