Finding the Fourth Proportional to 123,534.40, 170,364.72 and 89,773.60

Step by Step Solution

1. Step 1: Write the proportion equation
   123,534.40 : 170,364.72 = 89,773.60 : x
2. Step 2: Convert to fraction form
   123,534.40/170,364.72 = 89,773.60/x
3. Step 3: Cross multiply
   123,534.40x = 170,364.72 × 89,773.60
4. Step 4: Simplify right side
   123,534.40x = 15,294,254,227.39
5. Step 5: Solve for x
   x = 15,294,254,227.39/123,534.40
6. Step 6: Final answer
   x = 123,805.63