Finding the Fourth Proportional to 67,470.78, 93,117.90 and 39,176.47

Step by Step Solution

1. Step 1: Write the proportion equation
   67,470.78 : 93,117.90 = 39,176.47 : x
2. Step 2: Convert to fraction form
   67,470.78/93,117.90 = 39,176.47/x
3. Step 3: Cross multiply
   67,470.78x = 93,117.90 × 39,176.47
4. Step 4: Simplify right side
   67,470.78x = 3,648,030,615.81
5. Step 5: Solve for x
   x = 3,648,030,615.81/67,470.78
6. Step 6: Final answer
   x = 54,068.30