Finding the Fourth Proportional to 112,366.31, 155,096.78 and 64,635.03

Step by Step Solution

1. Step 1: Write the proportion equation
   112,366.31 : 155,096.78 = 64,635.03 : x
2. Step 2: Convert to fraction form
   112,366.31/155,096.78 = 64,635.03/x
3. Step 3: Cross multiply
   112,366.31x = 155,096.78 × 64,635.03
4. Step 4: Simplify right side
   112,366.31x = 10,024,684,705.03
5. Step 5: Solve for x
   x = 10,024,684,705.03/112,366.31
6. Step 6: Final answer
   x = 89,214.33