Finding the Fourth Proportional to 112,539.52, 155,300 and 64,794.56

Step by Step Solution

1. Step 1: Write the proportion equation
   112,539.52 : 155,300 = 64,794.56 : x
2. Step 2: Convert to fraction form
   112,539.52/155,300 = 64,794.56/x
3. Step 3: Cross multiply
   112,539.52x = 155,300 × 64,794.56
4. Step 4: Simplify right side
   112,539.52x = 10,062,595,168
5. Step 5: Solve for x
   x = 10,062,595,168/112,539.52
6. Step 6: Final answer
   x = 89,413.88