Finding the Fourth Proportional to 101,920.72, 140,644.32 and 56,595.94

Step by Step Solution

1. Step 1: Write the proportion equation
   101,920.72 : 140,644.32 = 56,595.94 : x
2. Step 2: Convert to fraction form
   101,920.72/140,644.32 = 56,595.94/x
3. Step 3: Cross multiply
   101,920.72x = 140,644.32 × 56,595.94
4. Step 4: Simplify right side
   101,920.72x = 7,959,897,496.06
5. Step 5: Solve for x
   x = 7,959,897,496.06/101,920.72
6. Step 6: Final answer
   x = 78,098.91