Finding the Fourth Proportional to 42,041.16, 63,061.52 and 12,461.31

Step by Step Solution

1. Step 1: Write the proportion equation
   42,041.16 : 63,061.52 = 12,461.31 : x
2. Step 2: Convert to fraction form
   42,041.16/63,061.52 = 12,461.31/x
3. Step 3: Cross multiply
   42,041.16x = 63,061.52 × 12,461.31
4. Step 4: Simplify right side
   42,041.16x = 785,829,087.48
5. Step 5: Solve for x
   x = 785,829,087.48/42,041.16
6. Step 6: Final answer
   x = 18,691.90