Finding the Fourth Proportional to 173,978.12, 240,573.12 and 138,105.92

Step by Step Solution

1. Step 1: Write the proportion equation
   173,978.12 : 240,573.12 = 138,105.92 : x
2. Step 2: Convert to fraction form
   173,978.12/240,573.12 = 138,105.92/x
3. Step 3: Cross multiply
   173,978.12x = 240,573.12 × 138,105.92
4. Step 4: Simplify right side
   173,978.12x = 33,224,572,064.87
5. Step 5: Solve for x
   x = 33,224,572,064.87/173,978.12
6. Step 6: Final answer
   x = 190,969.83