Finding the Fourth Proportional to 76,117.47, 105,040.60 and 42,123.98

Step by Step Solution

1. Step 1: Write the proportion equation
   76,117.47 : 105,040.60 = 42,123.98 : x
2. Step 2: Convert to fraction form
   76,117.47/105,040.60 = 42,123.98/x
3. Step 3: Cross multiply
   76,117.47x = 105,040.60 × 42,123.98
4. Step 4: Simplify right side
   76,117.47x = 4,424,728,133.59
5. Step 5: Solve for x
   x = 4,424,728,133.59/76,117.47
6. Step 6: Final answer
   x = 58,130.26