Finding the Fourth Proportional to 111,931.91, 154,476.93 and 83,588.39

Step by Step Solution

1. Step 1: Write the proportion equation
   111,931.91 : 154,476.93 = 83,588.39 : x
2. Step 2: Convert to fraction form
   111,931.91/154,476.93 = 83,588.39/x
3. Step 3: Cross multiply
   111,931.91x = 154,476.93 × 83,588.39
4. Step 4: Simplify right side
   111,931.91x = 12,912,477,870.84
5. Step 5: Solve for x
   x = 12,912,477,870.84/111,931.91
6. Step 6: Final answer
   x = 115,360.11