Finding the Fourth Proportional to 42,861.86, 59,139.80 and 25,868.88

Step by Step Solution

1. Step 1: Write the proportion equation
   42,861.86 : 59,139.80 = 25,868.88 : x
2. Step 2: Convert to fraction form
   42,861.86/59,139.80 = 25,868.88/x
3. Step 3: Cross multiply
   42,861.86x = 59,139.80 × 25,868.88
4. Step 4: Simplify right side
   42,861.86x = 1,529,880,389.42
5. Step 5: Solve for x
   x = 1,529,880,389.42/42,861.86
6. Step 6: Final answer
   x = 35,693.28