Finding the Fourth Proportional to 111,499.70, 153,870.72 and 60,512.87

Step by Step Solution

1. Step 1: Write the proportion equation
   111,499.70 : 153,870.72 = 60,512.87 : x
2. Step 2: Convert to fraction form
   111,499.70/153,870.72 = 60,512.87/x
3. Step 3: Cross multiply
   111,499.70x = 153,870.72 × 60,512.87
4. Step 4: Simplify right side
   111,499.70x = 9,311,158,876.17
5. Step 5: Solve for x
   x = 9,311,158,876.17/111,499.70
6. Step 6: Final answer
   x = 83,508.38