Finding the Fourth Proportional to 76,113.24, 105,034.11 and 42,123.15

Step by Step Solution

1. Step 1: Write the proportion equation
   76,113.24 : 105,034.11 = 42,123.15 : x
2. Step 2: Convert to fraction form
   76,113.24/105,034.11 = 42,123.15/x
3. Step 3: Cross multiply
   76,113.24x = 105,034.11 × 42,123.15
4. Step 4: Simplify right side
   76,113.24x = 4,424,367,570.65
5. Step 5: Solve for x
   x = 4,424,367,570.65/76,113.24
6. Step 6: Final answer
   x = 58,128.75