Finding the Fourth Proportional to 111,538.50, 153,925.56 and 61,237.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,538.50 : 153,925.56 = 61,237.50 : x
2. Step 2: Convert to fraction form
   111,538.50/153,925.56 = 61,237.50/x
3. Step 3: Cross multiply
   111,538.50x = 153,925.56 × 61,237.50
4. Step 4: Simplify right side
   111,538.50x = 9,426,016,480.50
5. Step 5: Solve for x
   x = 9,426,016,480.50/111,538.50
6. Step 6: Final answer
   x = 84,509.08