Finding the Fourth Proportional to 102,077.42, 140,871.52 and 56,760.06

Step by Step Solution

1. Step 1: Write the proportion equation
   102,077.42 : 140,871.52 = 56,760.06 : x
2. Step 2: Convert to fraction form
   102,077.42/140,871.52 = 56,760.06/x
3. Step 3: Cross multiply
   102,077.42x = 140,871.52 × 56,760.06
4. Step 4: Simplify right side
   102,077.42x = 7,995,875,927.49
5. Step 5: Solve for x
   x = 7,995,875,927.49/102,077.42
6. Step 6: Final answer
   x = 78,331.49