Finding the Fourth Proportional to 52,258.50, 72,118.05 and 28,385.17

Step by Step Solution

1. Step 1: Write the proportion equation
   52,258.50 : 72,118.05 = 28,385.17 : x
2. Step 2: Convert to fraction form
   52,258.50/72,118.05 = 28,385.17/x
3. Step 3: Cross multiply
   52,258.50x = 72,118.05 × 28,385.17
4. Step 4: Simplify right side
   52,258.50x = 2,047,082,822.58
5. Step 5: Solve for x
   x = 2,047,082,822.58/52,258.50
6. Step 6: Final answer
   x = 39,172.25