Finding the Fourth Proportional to 112,501.17, 155,282.23 and 64,128.56

Step by Step Solution

1. Step 1: Write the proportion equation
   112,501.17 : 155,282.23 = 64,128.56 : x
2. Step 2: Convert to fraction form
   112,501.17/155,282.23 = 64,128.56/x
3. Step 3: Cross multiply
   112,501.17x = 155,282.23 × 64,128.56
4. Step 4: Simplify right side
   112,501.17x = 9,958,025,803.49
5. Step 5: Solve for x
   x = 9,958,025,803.49/112,501.17
6. Step 6: Final answer
   x = 88,514.86