Finding the Fourth Proportional to 65,108.62, 89,819.56 and 42,145.86

Step by Step Solution

1. Step 1: Write the proportion equation
   65,108.62 : 89,819.56 = 42,145.86 : x
2. Step 2: Convert to fraction form
   65,108.62/89,819.56 = 42,145.86/x
3. Step 3: Cross multiply
   65,108.62x = 89,819.56 × 42,145.86
4. Step 4: Simplify right side
   65,108.62x = 3,785,522,601.02
5. Step 5: Solve for x
   x = 3,785,522,601.02/65,108.62
6. Step 6: Final answer
   x = 58,141.65