Finding the Fourth Proportional to 112,660.42, 155,478.86 and 64,916.82

Step by Step Solution

1. Step 1: Write the proportion equation
   112,660.42 : 155,478.86 = 64,916.82 : x
2. Step 2: Convert to fraction form
   112,660.42/155,478.86 = 64,916.82/x
3. Step 3: Cross multiply
   112,660.42x = 155,478.86 × 64,916.82
4. Step 4: Simplify right side
   112,660.42x = 10,093,193,168.43
5. Step 5: Solve for x
   x = 10,093,193,168.43/112,660.42
6. Step 6: Final answer
   x = 89,589.52