Finding the Fourth Proportional to 42,048.72, 63,062.15 and 12,458.61

Step by Step Solution

1. Step 1: Write the proportion equation
   42,048.72 : 63,062.15 = 12,458.61 : x
2. Step 2: Convert to fraction form
   42,048.72/63,062.15 = 12,458.61/x
3. Step 3: Cross multiply
   42,048.72x = 63,062.15 × 12,458.61
4. Step 4: Simplify right side
   42,048.72x = 785,666,670.32
5. Step 5: Solve for x
   x = 785,666,670.32/42,048.72
6. Step 6: Final answer
   x = 18,684.68