Finding the Fourth Proportional to 140,326.24, 193,685.52 and 90,112.72

Step by Step Solution

1. Step 1: Write the proportion equation
   140,326.24 : 193,685.52 = 90,112.72 : x
2. Step 2: Convert to fraction form
   140,326.24/193,685.52 = 90,112.72/x
3. Step 3: Cross multiply
   140,326.24x = 193,685.52 × 90,112.72
4. Step 4: Simplify right side
   140,326.24x = 17,453,529,031.81
5. Step 5: Solve for x
   x = 17,453,529,031.81/140,326.24
6. Step 6: Final answer
   x = 124,378.23