Finding the Fourth Proportional to 101,648.34, 140,274.72 and 56,936.34

Step by Step Solution

1. Step 1: Write the proportion equation
   101,648.34 : 140,274.72 = 56,936.34 : x
2. Step 2: Convert to fraction form
   101,648.34/140,274.72 = 56,936.34/x
3. Step 3: Cross multiply
   101,648.34x = 140,274.72 × 56,936.34
4. Step 4: Simplify right side
   101,648.34x = 7,986,729,151.32
5. Step 5: Solve for x
   x = 7,986,729,151.32/101,648.34
6. Step 6: Final answer
   x = 78,572.16