Finding the Fourth Proportional to 111,578.31, 153,977.46 and 60,590.57

Step by Step Solution

1. Step 1: Write the proportion equation
   111,578.31 : 153,977.46 = 60,590.57 : x
2. Step 2: Convert to fraction form
   111,578.31/153,977.46 = 60,590.57/x
3. Step 3: Cross multiply
   111,578.31x = 153,977.46 × 60,590.57
4. Step 4: Simplify right side
   111,578.31x = 9,329,581,071.45
5. Step 5: Solve for x
   x = 9,329,581,071.45/111,578.31
6. Step 6: Final answer
   x = 83,614.65