Finding the Fourth Proportional to 78,178.29, 107,886.03 and 42,368.30

Step by Step Solution

1. Step 1: Write the proportion equation
   78,178.29 : 107,886.03 = 42,368.30 : x
2. Step 2: Convert to fraction form
   78,178.29/107,886.03 = 42,368.30/x
3. Step 3: Cross multiply
   78,178.29x = 107,886.03 × 42,368.30
4. Step 4: Simplify right side
   78,178.29x = 4,570,947,684.85
5. Step 5: Solve for x
   x = 4,570,947,684.85/78,178.29
6. Step 6: Final answer
   x = 58,468.25