Finding the Fourth Proportional to 102,076.48, 140,858.72 and 56,750.96

Step by Step Solution

1. Step 1: Write the proportion equation
   102,076.48 : 140,858.72 = 56,750.96 : x
2. Step 2: Convert to fraction form
   102,076.48/140,858.72 = 56,750.96/x
3. Step 3: Cross multiply
   102,076.48x = 140,858.72 × 56,750.96
4. Step 4: Simplify right side
   102,076.48x = 7,993,867,584.37
5. Step 5: Solve for x
   x = 7,993,867,584.37/102,076.48
6. Step 6: Final answer
   x = 78,312.53