Finding the Fourth Proportional to 65,525.68, 90,458.17 and 42,899.34

Step by Step Solution

1. Step 1: Write the proportion equation
   65,525.68 : 90,458.17 = 42,899.34 : x
2. Step 2: Convert to fraction form
   65,525.68/90,458.17 = 42,899.34/x
3. Step 3: Cross multiply
   65,525.68x = 90,458.17 × 42,899.34
4. Step 4: Simplify right side
   65,525.68x = 3,880,595,513.75
5. Step 5: Solve for x
   x = 3,880,595,513.75/65,525.68
6. Step 6: Final answer
   x = 59,222.52