Finding the Fourth Proportional to 101,790.22, 140,470.86 and 56,469.10

Step by Step Solution

1. Step 1: Write the proportion equation
   101,790.22 : 140,470.86 = 56,469.10 : x
2. Step 2: Convert to fraction form
   101,790.22/140,470.86 = 56,469.10/x
3. Step 3: Cross multiply
   101,790.22x = 140,470.86 × 56,469.10
4. Step 4: Simplify right side
   101,790.22x = 7,932,263,040.43
5. Step 5: Solve for x
   x = 7,932,263,040.43/101,790.22
6. Step 6: Final answer
   x = 77,927.56