Finding the Fourth Proportional to 78,585.40, 117,906.52 and 48,564.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,585.40 : 117,906.52 = 48,564.50 : x
2. Step 2: Convert to fraction form
   78,585.40/117,906.52 = 48,564.50/x
3. Step 3: Cross multiply
   78,585.40x = 117,906.52 × 48,564.50
4. Step 4: Simplify right side
   78,585.40x = 5,726,071,190.54
5. Step 5: Solve for x
   x = 5,726,071,190.54/78,585.40
6. Step 6: Final answer
   x = 72,864.31