Finding the Fourth Proportional to 102,076.86, 140,865.94 and 56,753.42

Step by Step Solution

1. Step 1: Write the proportion equation
   102,076.86 : 140,865.94 = 56,753.42 : x
2. Step 2: Convert to fraction form
   102,076.86/140,865.94 = 56,753.42/x
3. Step 3: Cross multiply
   102,076.86x = 140,865.94 × 56,753.42
4. Step 4: Simplify right side
   102,076.86x = 7,994,623,856.51
5. Step 5: Solve for x
   x = 7,994,623,856.51/102,076.86
6. Step 6: Final answer
   x = 78,319.65