Finding the Fourth Proportional to 112,942.32, 169,348.68 and 42,776.88

Step by Step Solution

1. Step 1: Write the proportion equation
   112,942.32 : 169,348.68 = 42,776.88 : x
2. Step 2: Convert to fraction form
   112,942.32/169,348.68 = 42,776.88/x
3. Step 3: Cross multiply
   112,942.32x = 169,348.68 × 42,776.88
4. Step 4: Simplify right side
   112,942.32x = 7,244,208,162.52
5. Step 5: Solve for x
   x = 7,244,208,162.52/112,942.32
6. Step 6: Final answer
   x = 64,140.78