Finding the Fourth Proportional to 42,077.18, 63,115.50 and 10,487.06

Step by Step Solution

1. Step 1: Write the proportion equation
   42,077.18 : 63,115.50 = 10,487.06 : x
2. Step 2: Convert to fraction form
   42,077.18/63,115.50 = 10,487.06/x
3. Step 3: Cross multiply
   42,077.18x = 63,115.50 × 10,487.06
4. Step 4: Simplify right side
   42,077.18x = 661,896,035.43
5. Step 5: Solve for x
   x = 661,896,035.43/42,077.18
6. Step 6: Final answer
   x = 15,730.52