Finding the Fourth Proportional to 101,321.42, 139,826.36 and 56,002.28

Step by Step Solution

1. Step 1: Write the proportion equation
   101,321.42 : 139,826.36 = 56,002.28 : x
2. Step 2: Convert to fraction form
   101,321.42/139,826.36 = 56,002.28/x
3. Step 3: Cross multiply
   101,321.42x = 139,826.36 × 56,002.28
4. Step 4: Simplify right side
   101,321.42x = 7,830,594,404.97
5. Step 5: Solve for x
   x = 7,830,594,404.97/101,321.42
6. Step 6: Final answer
   x = 77,284.69