Finding the Fourth Proportional to 78,167, 107,870.46 and 42,356.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,167 : 107,870.46 = 42,356.72 : x
2. Step 2: Convert to fraction form
   78,167/107,870.46 = 42,356.72/x
3. Step 3: Cross multiply
   78,167x = 107,870.46 × 42,356.72
4. Step 4: Simplify right side
   78,167x = 4,569,038,870.49
5. Step 5: Solve for x
   x = 4,569,038,870.49/78,167
6. Step 6: Final answer
   x = 58,452.27