Finding the Fourth Proportional to 102,077.86, 140,867.32 and 56,754.42

Step by Step Solution

1. Step 1: Write the proportion equation
   102,077.86 : 140,867.32 = 56,754.42 : x
2. Step 2: Convert to fraction form
   102,077.86/140,867.32 = 56,754.42/x
3. Step 3: Cross multiply
   102,077.86x = 140,867.32 × 56,754.42
4. Step 4: Simplify right side
   102,077.86x = 7,994,843,043.55
5. Step 5: Solve for x
   x = 7,994,843,043.55/102,077.86
6. Step 6: Final answer
   x = 78,321.03