Finding the Fourth Proportional to 100,093.68, 138,123.32 and 54,762.63

Step by Step Solution

1. Step 1: Write the proportion equation
   100,093.68 : 138,123.32 = 54,762.63 : x
2. Step 2: Convert to fraction form
   100,093.68/138,123.32 = 54,762.63/x
3. Step 3: Cross multiply
   100,093.68x = 138,123.32 × 54,762.63
4. Step 4: Simplify right side
   100,093.68x = 7,563,995,993.72
5. Step 5: Solve for x
   x = 7,563,995,993.72/100,093.68
6. Step 6: Final answer
   x = 75,569.17