Finding the Fourth Proportional to 65,120.50, 89,866.83 and 35,312.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,120.50 : 89,866.83 = 35,312.50 : x
2. Step 2: Convert to fraction form
   65,120.50/89,866.83 = 35,312.50/x
3. Step 3: Cross multiply
   65,120.50x = 89,866.83 × 35,312.50
4. Step 4: Simplify right side
   65,120.50x = 3,173,422,434.38
5. Step 5: Solve for x
   x = 3,173,422,434.38/65,120.50
6. Step 6: Final answer
   x = 48,731.54