Finding the Fourth Proportional to 111,422.86, 153,754.41 and 61,121.86

Step by Step Solution

1. Step 1: Write the proportion equation
   111,422.86 : 153,754.41 = 61,121.86 : x
2. Step 2: Convert to fraction form
   111,422.86/153,754.41 = 61,121.86/x
3. Step 3: Cross multiply
   111,422.86x = 153,754.41 × 61,121.86
4. Step 4: Simplify right side
   111,422.86x = 9,397,755,522.40
5. Step 5: Solve for x
   x = 9,397,755,522.40/111,422.86
6. Step 6: Final answer
   x = 84,343.15