Finding the Fourth Proportional to 76,105.89, 105,031.39 and 42,115.82

Step by Step Solution

1. Step 1: Write the proportion equation
   76,105.89 : 105,031.39 = 42,115.82 : x
2. Step 2: Convert to fraction form
   76,105.89/105,031.39 = 42,115.82/x
3. Step 3: Cross multiply
   76,105.89x = 105,031.39 × 42,115.82
4. Step 4: Simplify right side
   76,105.89x = 4,423,482,485.14
5. Step 5: Solve for x
   x = 4,423,482,485.14/76,105.89
6. Step 6: Final answer
   x = 58,122.74