Finding the Fourth Proportional to 76,072.75, 104,978.46 and 42,082.63

Step by Step Solution

1. Step 1: Write the proportion equation
   76,072.75 : 104,978.46 = 42,082.63 : x
2. Step 2: Convert to fraction form
   76,072.75/104,978.46 = 42,082.63/x
3. Step 3: Cross multiply
   76,072.75x = 104,978.46 × 42,082.63
4. Step 4: Simplify right side
   76,072.75x = 4,417,769,690.15
5. Step 5: Solve for x
   x = 4,417,769,690.15/76,072.75
6. Step 6: Final answer
   x = 58,072.96