Finding the Fourth Proportional to 76,113.57, 105,034.13 and 42,123.49

Step by Step Solution

1. Step 1: Write the proportion equation
   76,113.57 : 105,034.13 = 42,123.49 : x
2. Step 2: Convert to fraction form
   76,113.57/105,034.13 = 42,123.49/x
3. Step 3: Cross multiply
   76,113.57x = 105,034.13 × 42,123.49
4. Step 4: Simplify right side
   76,113.57x = 4,424,404,124.71
5. Step 5: Solve for x
   x = 4,424,404,124.71/76,113.57
6. Step 6: Final answer
   x = 58,128.98