Finding the Fourth Proportional to 111,541.50, 153,928.98 and 61,240.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,541.50 : 153,928.98 = 61,240.50 : x
2. Step 2: Convert to fraction form
   111,541.50/153,928.98 = 61,240.50/x
3. Step 3: Cross multiply
   111,541.50x = 153,928.98 × 61,240.50
4. Step 4: Simplify right side
   111,541.50x = 9,426,687,699.69
5. Step 5: Solve for x
   x = 9,426,687,699.69/111,541.50
6. Step 6: Final answer
   x = 84,512.83