Finding the Fourth Proportional to 116,663.76, 160,848 and 89,471.52

Step by Step Solution

1. Step 1: Write the proportion equation
   116,663.76 : 160,848 = 89,471.52 : x
2. Step 2: Convert to fraction form
   116,663.76/160,848 = 89,471.52/x
3. Step 3: Cross multiply
   116,663.76x = 160,848 × 89,471.52
4. Step 4: Simplify right side
   116,663.76x = 14,391,315,048.96
5. Step 5: Solve for x
   x = 14,391,315,048.96/116,663.76
6. Step 6: Final answer
   x = 123,357.20