Finding the Fourth Proportional to 111,503, 153,871.59 and 60,515.83

Step by Step Solution

1. Step 1: Write the proportion equation
   111,503 : 153,871.59 = 60,515.83 : x
2. Step 2: Convert to fraction form
   111,503/153,871.59 = 60,515.83/x
3. Step 3: Cross multiply
   111,503x = 153,871.59 × 60,515.83
4. Step 4: Simplify right side
   111,503x = 9,311,666,212.91
5. Step 5: Solve for x
   x = 9,311,666,212.91/111,503
6. Step 6: Final answer
   x = 83,510.45