Finding the Fourth Proportional to 101,918.72, 140,641.56 and 56,593.94

Step by Step Solution

1. Step 1: Write the proportion equation
   101,918.72 : 140,641.56 = 56,593.94 : x
2. Step 2: Convert to fraction form
   101,918.72/140,641.56 = 56,593.94/x
3. Step 3: Cross multiply
   101,918.72x = 140,641.56 × 56,593.94
4. Step 4: Simplify right side
   101,918.72x = 7,959,460,008.15
5. Step 5: Solve for x
   x = 7,959,460,008.15/101,918.72
6. Step 6: Final answer
   x = 78,096.15