Finding the Fourth Proportional to 65,568.18, 90,396.99 and 42,868.15

Step by Step Solution

1. Step 1: Write the proportion equation
   65,568.18 : 90,396.99 = 42,868.15 : x
2. Step 2: Convert to fraction form
   65,568.18/90,396.99 = 42,868.15/x
3. Step 3: Cross multiply
   65,568.18x = 90,396.99 × 42,868.15
4. Step 4: Simplify right side
   65,568.18x = 3,875,151,726.87
5. Step 5: Solve for x
   x = 3,875,151,726.87/65,568.18
6. Step 6: Final answer
   x = 59,101.10