Finding the Fourth Proportional to 42,031.17, 63,055.98 and 12,451.32

Step by Step Solution

1. Step 1: Write the proportion equation
   42,031.17 : 63,055.98 = 12,451.32 : x
2. Step 2: Convert to fraction form
   42,031.17/63,055.98 = 12,451.32/x
3. Step 3: Cross multiply
   42,031.17x = 63,055.98 × 12,451.32
4. Step 4: Simplify right side
   42,031.17x = 785,130,184.89
5. Step 5: Solve for x
   x = 785,130,184.89/42,031.17
6. Step 6: Final answer
   x = 18,679.71