Finding the Fourth Proportional to 100,096.74, 138,131.37 and 54,774.54

Step by Step Solution

1. Step 1: Write the proportion equation
   100,096.74 : 138,131.37 = 54,774.54 : x
2. Step 2: Convert to fraction form
   100,096.74/138,131.37 = 54,774.54/x
3. Step 3: Cross multiply
   100,096.74x = 138,131.37 × 54,774.54
4. Step 4: Simplify right side
   100,096.74x = 7,566,082,251.32
5. Step 5: Solve for x
   x = 7,566,082,251.32/100,096.74
6. Step 6: Final answer
   x = 75,587.70