Finding the Fourth Proportional to 102,066.38, 140,843.60 and 56,741.61

Step by Step Solution

1. Step 1: Write the proportion equation
   102,066.38 : 140,843.60 = 56,741.61 : x
2. Step 2: Convert to fraction form
   102,066.38/140,843.60 = 56,741.61/x
3. Step 3: Cross multiply
   102,066.38x = 140,843.60 × 56,741.61
4. Step 4: Simplify right side
   102,066.38x = 7,991,692,059.83
5. Step 5: Solve for x
   x = 7,991,692,059.83/102,066.38
6. Step 6: Final answer
   x = 78,298.97