Finding the Fourth Proportional to 63,931.92, 88,184.88 and 42,421.20

Step by Step Solution

1. Step 1: Write the proportion equation
   63,931.92 : 88,184.88 = 42,421.20 : x
2. Step 2: Convert to fraction form
   63,931.92/88,184.88 = 42,421.20/x
3. Step 3: Cross multiply
   63,931.92x = 88,184.88 × 42,421.20
4. Step 4: Simplify right side
   63,931.92x = 3,740,908,431.46
5. Step 5: Solve for x
   x = 3,740,908,431.46/63,931.92
6. Step 6: Final answer
   x = 58,513.94