Finding the Fourth Proportional to 126,300.63, 174,290.52 and 75,287.06

Step by Step Solution

1. Step 1: Write the proportion equation
   126,300.63 : 174,290.52 = 75,287.06 : x
2. Step 2: Convert to fraction form
   126,300.63/174,290.52 = 75,287.06/x
3. Step 3: Cross multiply
   126,300.63x = 174,290.52 × 75,287.06
4. Step 4: Simplify right side
   126,300.63x = 13,121,819,965.22
5. Step 5: Solve for x
   x = 13,121,819,965.22/126,300.63
6. Step 6: Final answer
   x = 103,893.54