Finding the Fourth Proportional to 65,120.56, 89,866.38 and 35,312.56

Step by Step Solution

1. Step 1: Write the proportion equation
   65,120.56 : 89,866.38 = 35,312.56 : x
2. Step 2: Convert to fraction form
   65,120.56/89,866.38 = 35,312.56/x
3. Step 3: Cross multiply
   65,120.56x = 89,866.38 × 35,312.56
4. Step 4: Simplify right side
   65,120.56x = 3,173,411,935.73
5. Step 5: Solve for x
   x = 3,173,411,935.73/65,120.56
6. Step 6: Final answer
   x = 48,731.34