Finding the Fourth Proportional to 101,895.98, 140,617.72 and 56,576.78

Step by Step Solution

1. Step 1: Write the proportion equation
   101,895.98 : 140,617.72 = 56,576.78 : x
2. Step 2: Convert to fraction form
   101,895.98/140,617.72 = 56,576.78/x
3. Step 3: Cross multiply
   101,895.98x = 140,617.72 × 56,576.78
4. Step 4: Simplify right side
   101,895.98x = 7,955,697,703.49
5. Step 5: Solve for x
   x = 7,955,697,703.49/101,895.98
6. Step 6: Final answer
   x = 78,076.66