Finding the Fourth Proportional to 112,288.20, 154,957.98 and 61,300.95

Step by Step Solution

1. Step 1: Write the proportion equation
   112,288.20 : 154,957.98 = 61,300.95 : x
2. Step 2: Convert to fraction form
   112,288.20/154,957.98 = 61,300.95/x
3. Step 3: Cross multiply
   112,288.20x = 154,957.98 × 61,300.95
4. Step 4: Simplify right side
   112,288.20x = 9,499,071,384.08
5. Step 5: Solve for x
   x = 9,499,071,384.08/112,288.20
6. Step 6: Final answer
   x = 84,595.46