Finding the Fourth Proportional to 136,448.01, 204,445.74 and 82,978.25

Step by Step Solution

1. Step 1: Write the proportion equation
   136,448.01 : 204,445.74 = 82,978.25 : x
2. Step 2: Convert to fraction form
   136,448.01/204,445.74 = 82,978.25/x
3. Step 3: Cross multiply
   136,448.01x = 204,445.74 × 82,978.25
4. Step 4: Simplify right side
   136,448.01x = 16,964,549,014.09
5. Step 5: Solve for x
   x = 16,964,549,014.09/136,448.01
6. Step 6: Final answer
   x = 124,329.76