Finding the Fourth Proportional to 76,279.58, 105,272.04 and 42,298.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,279.58 : 105,272.04 = 42,298.72 : x
2. Step 2: Convert to fraction form
   76,279.58/105,272.04 = 42,298.72/x
3. Step 3: Cross multiply
   76,279.58x = 105,272.04 × 42,298.72
4. Step 4: Simplify right side
   76,279.58x = 4,452,872,793.45
5. Step 5: Solve for x
   x = 4,452,872,793.45/76,279.58
6. Step 6: Final answer
   x = 58,375.68