Finding the Fourth Proportional to 111,575.82, 153,977.31 and 61,275.90

Step by Step Solution

1. Step 1: Write the proportion equation
   111,575.82 : 153,977.31 = 61,275.90 : x
2. Step 2: Convert to fraction form
   111,575.82/153,977.31 = 61,275.90/x
3. Step 3: Cross multiply
   111,575.82x = 153,977.31 × 61,275.90
4. Step 4: Simplify right side
   111,575.82x = 9,435,098,249.83
5. Step 5: Solve for x
   x = 9,435,098,249.83/111,575.82
6. Step 6: Final answer
   x = 84,562.21