Finding the Fourth Proportional to 112,644.18, 155,487.78 and 64,916.52

Step by Step Solution

1. Step 1: Write the proportion equation
   112,644.18 : 155,487.78 = 64,916.52 : x
2. Step 2: Convert to fraction form
   112,644.18/155,487.78 = 64,916.52/x
3. Step 3: Cross multiply
   112,644.18x = 155,487.78 × 64,916.52
4. Step 4: Simplify right side
   112,644.18x = 10,093,725,580.13
5. Step 5: Solve for x
   x = 10,093,725,580.13/112,644.18
6. Step 6: Final answer
   x = 89,607.16