Finding the Fourth Proportional to 112,465.59, 155,216.15 and 64,717.91

Step by Step Solution

1. Step 1: Write the proportion equation
   112,465.59 : 155,216.15 = 64,717.91 : x
2. Step 2: Convert to fraction form
   112,465.59/155,216.15 = 64,717.91/x
3. Step 3: Cross multiply
   112,465.59x = 155,216.15 × 64,717.91
4. Step 4: Simplify right side
   112,465.59x = 10,045,264,826.25
5. Step 5: Solve for x
   x = 10,045,264,826.25/112,465.59
6. Step 6: Final answer
   x = 89,318.56