Finding the Fourth Proportional to 101,945.72, 140,680.32 and 56,626.58

Step by Step Solution

1. Step 1: Write the proportion equation
   101,945.72 : 140,680.32 = 56,626.58 : x
2. Step 2: Convert to fraction form
   101,945.72/140,680.32 = 56,626.58/x
3. Step 3: Cross multiply
   101,945.72x = 140,680.32 × 56,626.58
4. Step 4: Simplify right side
   101,945.72x = 7,966,245,394.91
5. Step 5: Solve for x
   x = 7,966,245,394.91/101,945.72
6. Step 6: Final answer
   x = 78,142.03