Finding the Fourth Proportional to 76,676.01, 105,819.30 and 42,690.95

Step by Step Solution

1. Step 1: Write the proportion equation
   76,676.01 : 105,819.30 = 42,690.95 : x
2. Step 2: Convert to fraction form
   76,676.01/105,819.30 = 42,690.95/x
3. Step 3: Cross multiply
   76,676.01x = 105,819.30 × 42,690.95
4. Step 4: Simplify right side
   76,676.01x = 4,517,525,702.78
5. Step 5: Solve for x
   x = 4,517,525,702.78/76,676.01
6. Step 6: Final answer
   x = 58,917.07