Finding the Fourth Proportional to 42,820.95, 59,088.91 and 25,589.90

Step by Step Solution

1. Step 1: Write the proportion equation
   42,820.95 : 59,088.91 = 25,589.90 : x
2. Step 2: Convert to fraction form
   42,820.95/59,088.91 = 25,589.90/x
3. Step 3: Cross multiply
   42,820.95x = 59,088.91 × 25,589.90
4. Step 4: Simplify right side
   42,820.95x = 1,512,078,874.61
5. Step 5: Solve for x
   x = 1,512,078,874.61/42,820.95
6. Step 6: Final answer
   x = 35,311.66