Finding the Fourth Proportional to 72,773,767.86, 108,829,091.58 and 54,342,655.86

Step by Step Solution

1. Step 1: Write the proportion equation
   72,773,767.86 : 108,829,091.58 = 54,342,655.86 : x
2. Step 2: Convert to fraction form
   72,773,767.86/108,829,091.58 = 54,342,655.86/x
3. Step 3: Cross multiply
   72,773,767.86x = 108,829,091.58 × 54,342,655.86
4. Step 4: Simplify right side
   72,773,767.86x = 5,914,061,871,288,363
5. Step 5: Solve for x
   x = 5,914,061,871,288,363/72,773,767.86
6. Step 6: Final answer
   x = 81,266,396.47