Finding the Fourth Proportional to 253,225.02, 379,879.77 and 112,978.38

Step by Step Solution

1. Step 1: Write the proportion equation
   253,225.02 : 379,879.77 = 112,978.38 : x
2. Step 2: Convert to fraction form
   253,225.02/379,879.77 = 112,978.38/x
3. Step 3: Cross multiply
   253,225.02x = 379,879.77 × 112,978.38
4. Step 4: Simplify right side
   253,225.02x = 42,918,201,009.37
5. Step 5: Solve for x
   x = 42,918,201,009.37/253,225.02
6. Step 6: Final answer
   x = 169,486.42