Finding the Fourth Proportional to 112,939.99, 155,835.59 and 64,557.24

Step by Step Solution

1. Step 1: Write the proportion equation
   112,939.99 : 155,835.59 = 64,557.24 : x
2. Step 2: Convert to fraction form
   112,939.99/155,835.59 = 64,557.24/x
3. Step 3: Cross multiply
   112,939.99x = 155,835.59 × 64,557.24
4. Step 4: Simplify right side
   112,939.99x = 10,060,315,584.17
5. Step 5: Solve for x
   x = 10,060,315,584.17/112,939.99
6. Step 6: Final answer
   x = 89,076.65