Finding the Fourth Proportional to 112,478.59, 155,227.26 and 64,730.89

Step by Step Solution

1. Step 1: Write the proportion equation
   112,478.59 : 155,227.26 = 64,730.89 : x
2. Step 2: Convert to fraction form
   112,478.59/155,227.26 = 64,730.89/x
3. Step 3: Cross multiply
   112,478.59x = 155,227.26 × 64,730.89
4. Step 4: Simplify right side
   112,478.59x = 10,047,998,692.06
5. Step 5: Solve for x
   x = 10,047,998,692.06/112,478.59
6. Step 6: Final answer
   x = 89,332.54