Finding the Fourth Proportional to 102,421, 141,341.57 and 57,101.83

Step by Step Solution

1. Step 1: Write the proportion equation
   102,421 : 141,341.57 = 57,101.83 : x
2. Step 2: Convert to fraction form
   102,421/141,341.57 = 57,101.83/x
3. Step 3: Cross multiply
   102,421x = 141,341.57 × 57,101.83
4. Step 4: Simplify right side
   102,421x = 8,070,862,016.56
5. Step 5: Solve for x
   x = 8,070,862,016.56/102,421
6. Step 6: Final answer
   x = 78,800.85