Finding the Fourth Proportional to 56,843.63, 78,449.75 and 42,478.52

Step by Step Solution

1. Step 1: Write the proportion equation
   56,843.63 : 78,449.75 = 42,478.52 : x
2. Step 2: Convert to fraction form
   56,843.63/78,449.75 = 42,478.52/x
3. Step 3: Cross multiply
   56,843.63x = 78,449.75 × 42,478.52
4. Step 4: Simplify right side
   56,843.63x = 3,332,428,669.73
5. Step 5: Solve for x
   x = 3,332,428,669.73/56,843.63
6. Step 6: Final answer
   x = 58,624.49