Finding the Fourth Proportional to 42,041.76, 63,062.86 and 12,459.85

Step by Step Solution

1. Step 1: Write the proportion equation
   42,041.76 : 63,062.86 = 12,459.85 : x
2. Step 2: Convert to fraction form
   42,041.76/63,062.86 = 12,459.85/x
3. Step 3: Cross multiply
   42,041.76x = 63,062.86 × 12,459.85
4. Step 4: Simplify right side
   42,041.76x = 785,753,776.17
5. Step 5: Solve for x
   x = 785,753,776.17/42,041.76
6. Step 6: Final answer
   x = 18,689.84