Finding the Fourth Proportional to 100,358.83, 138,498.24 and 55,038.70

Step by Step Solution

1. Step 1: Write the proportion equation
   100,358.83 : 138,498.24 = 55,038.70 : x
2. Step 2: Convert to fraction form
   100,358.83/138,498.24 = 55,038.70/x
3. Step 3: Cross multiply
   100,358.83x = 138,498.24 × 55,038.70
4. Step 4: Simplify right side
   100,358.83x = 7,622,763,081.89
5. Step 5: Solve for x
   x = 7,622,763,081.89/100,358.83
6. Step 6: Final answer
   x = 75,955.08