Finding the Fourth Proportional to 101,764.19, 140,443.18 and 56,456.73

Step by Step Solution

1. Step 1: Write the proportion equation
   101,764.19 : 140,443.18 = 56,456.73 : x
2. Step 2: Convert to fraction form
   101,764.19/140,443.18 = 56,456.73/x
3. Step 3: Cross multiply
   101,764.19x = 140,443.18 × 56,456.73
4. Step 4: Simplify right side
   101,764.19x = 7,928,962,693.60
5. Step 5: Solve for x
   x = 7,928,962,693.60/101,764.19
6. Step 6: Final answer
   x = 77,915.06