Finding the Fourth Proportional to 78,870.18, 108,853.35 and 50,159.91

Step by Step Solution

1. Step 1: Write the proportion equation
   78,870.18 : 108,853.35 = 50,159.91 : x
2. Step 2: Convert to fraction form
   78,870.18/108,853.35 = 50,159.91/x
3. Step 3: Cross multiply
   78,870.18x = 108,853.35 × 50,159.91
4. Step 4: Simplify right side
   78,870.18x = 5,460,074,239.20
5. Step 5: Solve for x
   x = 5,460,074,239.20/78,870.18
6. Step 6: Final answer
   x = 69,228.63