Finding the Fourth Proportional to 111,822.50, 154,315.06 and 61,521.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,822.50 : 154,315.06 = 61,521.50 : x
2. Step 2: Convert to fraction form
   111,822.50/154,315.06 = 61,521.50/x
3. Step 3: Cross multiply
   111,822.50x = 154,315.06 × 61,521.50
4. Step 4: Simplify right side
   111,822.50x = 9,493,693,963.79
5. Step 5: Solve for x
   x = 9,493,693,963.79/111,822.50
6. Step 6: Final answer
   x = 84,899.68