Finding the Fourth Proportional to 78,342.71, 117,433.63 and 30,938.59

Step by Step Solution

1. Step 1: Write the proportion equation
   78,342.71 : 117,433.63 = 30,938.59 : x
2. Step 2: Convert to fraction form
   78,342.71/117,433.63 = 30,938.59/x
3. Step 3: Cross multiply
   78,342.71x = 117,433.63 × 30,938.59
4. Step 4: Simplify right side
   78,342.71x = 3,633,230,559.85
5. Step 5: Solve for x
   x = 3,633,230,559.85/78,342.71
6. Step 6: Final answer
   x = 46,376.11