Finding the Fourth Proportional to 116,633.95, 161,032.31 and 89,728.99

Step by Step Solution

1. Step 1: Write the proportion equation
   116,633.95 : 161,032.31 = 89,728.99 : x
2. Step 2: Convert to fraction form
   116,633.95/161,032.31 = 89,728.99/x
3. Step 3: Cross multiply
   116,633.95x = 161,032.31 × 89,728.99
4. Step 4: Simplify right side
   116,633.95x = 14,449,265,952.83
5. Step 5: Solve for x
   x = 14,449,265,952.83/116,633.95
6. Step 6: Final answer
   x = 123,885.60