Finding the Fourth Proportional to 101,771.34, 140,443.52 and 56,449.42

Step by Step Solution

1. Step 1: Write the proportion equation
   101,771.34 : 140,443.52 = 56,449.42 : x
2. Step 2: Convert to fraction form
   101,771.34/140,443.52 = 56,449.42/x
3. Step 3: Cross multiply
   101,771.34x = 140,443.52 × 56,449.42
4. Step 4: Simplify right side
   101,771.34x = 7,927,955,246.76
5. Step 5: Solve for x
   x = 7,927,955,246.76/101,771.34
6. Step 6: Final answer
   x = 77,899.68