Finding the Fourth Proportional to 65,128.32, 89,877.24 and 35,320.32

Step by Step Solution

1. Step 1: Write the proportion equation
   65,128.32 : 89,877.24 = 35,320.32 : x
2. Step 2: Convert to fraction form
   65,128.32/89,877.24 = 35,320.32/x
3. Step 3: Cross multiply
   65,128.32x = 89,877.24 × 35,320.32
4. Step 4: Simplify right side
   65,128.32x = 3,174,492,877.52
5. Step 5: Solve for x
   x = 3,174,492,877.52/65,128.32
6. Step 6: Final answer
   x = 48,742.13