Finding the Fourth Proportional to 112,889.52, 155,803.68 and 65,159.28

Step by Step Solution

1. Step 1: Write the proportion equation
   112,889.52 : 155,803.68 = 65,159.28 : x
2. Step 2: Convert to fraction form
   112,889.52/155,803.68 = 65,159.28/x
3. Step 3: Cross multiply
   112,889.52x = 155,803.68 × 65,159.28
4. Step 4: Simplify right side
   112,889.52x = 10,152,055,610.15
5. Step 5: Solve for x
   x = 10,152,055,610.15/112,889.52
6. Step 6: Final answer
   x = 89,929.12