Finding the Fourth Proportional to 111,933.91, 154,479.69 and 83,590.39

Step by Step Solution

1. Step 1: Write the proportion equation
   111,933.91 : 154,479.69 = 83,590.39 : x
2. Step 2: Convert to fraction form
   111,933.91/154,479.69 = 83,590.39/x
3. Step 3: Cross multiply
   111,933.91x = 154,479.69 × 83,590.39
4. Step 4: Simplify right side
   111,933.91x = 12,913,017,534.18
5. Step 5: Solve for x
   x = 12,913,017,534.18/111,933.91
6. Step 6: Final answer
   x = 115,362.87