Finding the Fourth Proportional to 111,776.10, 154,252.05 and 60,789.31

Step by Step Solution

1. Step 1: Write the proportion equation
   111,776.10 : 154,252.05 = 60,789.31 : x
2. Step 2: Convert to fraction form
   111,776.10/154,252.05 = 60,789.31/x
3. Step 3: Cross multiply
   111,776.10x = 154,252.05 × 60,789.31
4. Step 4: Simplify right side
   111,776.10x = 9,376,875,685.59
5. Step 5: Solve for x
   x = 9,376,875,685.59/111,776.10
6. Step 6: Final answer
   x = 83,889.81