Finding the Fourth Proportional to 111,580.56, 153,981.27 and 61,279.56

Step by Step Solution

1. Step 1: Write the proportion equation
   111,580.56 : 153,981.27 = 61,279.56 : x
2. Step 2: Convert to fraction form
   111,580.56/153,981.27 = 61,279.56/x
3. Step 3: Cross multiply
   111,580.56x = 153,981.27 × 61,279.56
4. Step 4: Simplify right side
   111,580.56x = 9,435,904,473.84
5. Step 5: Solve for x
   x = 9,435,904,473.84/111,580.56
6. Step 6: Final answer
   x = 84,565.85