Finding the Fourth Proportional to 99,665,350.27, 137,517,641.46 and 57,270,718.86

Step by Step Solution

1. Step 1: Write the proportion equation
   99,665,350.27 : 137,517,641.46 = 57,270,718.86 : x
2. Step 2: Convert to fraction form
   99,665,350.27/137,517,641.46 = 57,270,718.86/x
3. Step 3: Cross multiply
   99,665,350.27x = 137,517,641.46 × 57,270,718.86
4. Step 4: Simplify right side
   99,665,350.27x = 7,875,734,182,603,786
5. Step 5: Solve for x
   x = 7,875,734,182,603,786/99,665,350.27
6. Step 6: Final answer
   x = 79,021,788.02