Finding the Fourth Proportional to 42,061.80, 63,082.96 and 12,472.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,061.80 : 63,082.96 = 12,472.50 : x
2. Step 2: Convert to fraction form
   42,061.80/63,082.96 = 12,472.50/x
3. Step 3: Cross multiply
   42,061.80x = 63,082.96 × 12,472.50
4. Step 4: Simplify right side
   42,061.80x = 786,802,218.60
5. Step 5: Solve for x
   x = 786,802,218.60/42,061.80
6. Step 6: Final answer
   x = 18,705.86