Finding the Fourth Proportional to 185,485.50, 278,264.33 and 78,868.23

Step by Step Solution

1. Step 1: Write the proportion equation
   185,485.50 : 278,264.33 = 78,868.23 : x
2. Step 2: Convert to fraction form
   185,485.50/278,264.33 = 78,868.23/x
3. Step 3: Cross multiply
   185,485.50x = 278,264.33 × 78,868.23
4. Step 4: Simplify right side
   185,485.50x = 21,946,214,784.89
5. Step 5: Solve for x
   x = 21,946,214,784.89/185,485.50
6. Step 6: Final answer
   x = 118,317.68