Finding the Fourth Proportional to 111,439, 153,785.82 and 61,139.08

Step by Step Solution

1. Step 1: Write the proportion equation
   111,439 : 153,785.82 = 61,139.08 : x
2. Step 2: Convert to fraction form
   111,439/153,785.82 = 61,139.08/x
3. Step 3: Cross multiply
   111,439x = 153,785.82 × 61,139.08
4. Step 4: Simplify right side
   111,439x = 9,402,323,551.85
5. Step 5: Solve for x
   x = 9,402,323,551.85/111,439
6. Step 6: Final answer
   x = 84,371.93