Finding the Fourth Proportional to 78,178.04, 107,885.69 and 42,368.06

Step by Step Solution

1. Step 1: Write the proportion equation
   78,178.04 : 107,885.69 = 42,368.06 : x
2. Step 2: Convert to fraction form
   78,178.04/107,885.69 = 42,368.06/x
3. Step 3: Cross multiply
   78,178.04x = 107,885.69 × 42,368.06
4. Step 4: Simplify right side
   78,178.04x = 4,570,906,635.79
5. Step 5: Solve for x
   x = 4,570,906,635.79/78,178.04
6. Step 6: Final answer
   x = 58,467.91