Finding the Fourth Proportional to 112,499.57, 155,288.48 and 64,771.94

Step by Step Solution

1. Step 1: Write the proportion equation
   112,499.57 : 155,288.48 = 64,771.94 : x
2. Step 2: Convert to fraction form
   112,499.57/155,288.48 = 64,771.94/x
3. Step 3: Cross multiply
   112,499.57x = 155,288.48 × 64,771.94
4. Step 4: Simplify right side
   112,499.57x = 10,058,336,173.61
5. Step 5: Solve for x
   x = 10,058,336,173.61/112,499.57
6. Step 6: Final answer
   x = 89,407.77