Finding the Fourth Proportional to 112,660.10, 155,478.38 and 64,916.46

Step by Step Solution

1. Step 1: Write the proportion equation
   112,660.10 : 155,478.38 = 64,916.46 : x
2. Step 2: Convert to fraction form
   112,660.10/155,478.38 = 64,916.46/x
3. Step 3: Cross multiply
   112,660.10x = 155,478.38 × 64,916.46
4. Step 4: Simplify right side
   112,660.10x = 10,093,106,036.13
5. Step 5: Solve for x
   x = 10,093,106,036.13/112,660.10
6. Step 6: Final answer
   x = 89,589.00