Finding the Fourth Proportional to 112,256.80, 154,925.28 and 83,913.28

Step by Step Solution

1. Step 1: Write the proportion equation
   112,256.80 : 154,925.28 = 83,913.28 : x
2. Step 2: Convert to fraction form
   112,256.80/154,925.28 = 83,913.28/x
3. Step 3: Cross multiply
   112,256.80x = 154,925.28 × 83,913.28
4. Step 4: Simplify right side
   112,256.80x = 13,000,288,399.72
5. Step 5: Solve for x
   x = 13,000,288,399.72/112,256.80
6. Step 6: Final answer
   x = 115,808.47