Finding the Fourth Proportional to 102,469.98, 141,405.10 and 56,531.46

Step by Step Solution

1. Step 1: Write the proportion equation
   102,469.98 : 141,405.10 = 56,531.46 : x
2. Step 2: Convert to fraction form
   102,469.98/141,405.10 = 56,531.46/x
3. Step 3: Cross multiply
   102,469.98x = 141,405.10 × 56,531.46
4. Step 4: Simplify right side
   102,469.98x = 7,993,836,347.98
5. Step 5: Solve for x
   x = 7,993,836,347.98/102,469.98
6. Step 6: Final answer
   x = 78,011.50