Finding the Fourth Proportional to 62,870.64, 86,763.30 and 34,578.15

Step by Step Solution

1. Step 1: Write the proportion equation
   62,870.64 : 86,763.30 = 34,578.15 : x
2. Step 2: Convert to fraction form
   62,870.64/86,763.30 = 34,578.15/x
3. Step 3: Cross multiply
   62,870.64x = 86,763.30 × 34,578.15
4. Step 4: Simplify right side
   62,870.64x = 3,000,114,401.90
5. Step 5: Solve for x
   x = 3,000,114,401.90/62,870.64
6. Step 6: Final answer
   x = 47,718.85