Finding the Fourth Proportional to 65,256.19, 90,066.50 and 42,598.87

Step by Step Solution

1. Step 1: Write the proportion equation
   65,256.19 : 90,066.50 = 42,598.87 : x
2. Step 2: Convert to fraction form
   65,256.19/90,066.50 = 42,598.87/x
3. Step 3: Cross multiply
   65,256.19x = 90,066.50 × 42,598.87
4. Step 4: Simplify right side
   65,256.19x = 3,836,731,124.86
5. Step 5: Solve for x
   x = 3,836,731,124.86/65,256.19
6. Step 6: Final answer
   x = 58,794.90