Finding the Fourth Proportional to 78,590.32, 108,454.52 and 42,780.22

Step by Step Solution

1. Step 1: Write the proportion equation
   78,590.32 : 108,454.52 = 42,780.22 : x
2. Step 2: Convert to fraction form
   78,590.32/108,454.52 = 42,780.22/x
3. Step 3: Cross multiply
   78,590.32x = 108,454.52 × 42,780.22
4. Step 4: Simplify right side
   78,590.32x = 4,639,708,225.59
5. Step 5: Solve for x
   x = 4,639,708,225.59/78,590.32
6. Step 6: Final answer
   x = 59,036.64