Finding the Fourth Proportional to 112,980.52, 169,470.71 and 42,859.83

Step by Step Solution

1. Step 1: Write the proportion equation
   112,980.52 : 169,470.71 = 42,859.83 : x
2. Step 2: Convert to fraction form
   112,980.52/169,470.71 = 42,859.83/x
3. Step 3: Cross multiply
   112,980.52x = 169,470.71 × 42,859.83
4. Step 4: Simplify right side
   112,980.52x = 7,263,485,606.28
5. Step 5: Solve for x
   x = 7,263,485,606.28/112,980.52
6. Step 6: Final answer
   x = 64,289.72