Finding the Fourth Proportional to 112,629.95, 155,446.78 and 64,231.98

Step by Step Solution

1. Step 1: Write the proportion equation
   112,629.95 : 155,446.78 = 64,231.98 : x
2. Step 2: Convert to fraction form
   112,629.95/155,446.78 = 64,231.98/x
3. Step 3: Cross multiply
   112,629.95x = 155,446.78 × 64,231.98
4. Step 4: Simplify right side
   112,629.95x = 9,984,654,464.02
5. Step 5: Solve for x
   x = 9,984,654,464.02/112,629.95
6. Step 6: Final answer
   x = 88,650.08