Finding the Fourth Proportional to 100,377.34, 138,520.92 and 55,055.69

Step by Step Solution

1. Step 1: Write the proportion equation
   100,377.34 : 138,520.92 = 55,055.69 : x
2. Step 2: Convert to fraction form
   100,377.34/138,520.92 = 55,055.69/x
3. Step 3: Cross multiply
   100,377.34x = 138,520.92 × 55,055.69
4. Step 4: Simplify right side
   100,377.34x = 7,626,364,863.34
5. Step 5: Solve for x
   x = 7,626,364,863.34/100,377.34
6. Step 6: Final answer
   x = 75,976.96