Finding the Fourth Proportional to 101,617.34, 140,217.89 and 56,284.07

Step by Step Solution

1. Step 1: Write the proportion equation
   101,617.34 : 140,217.89 = 56,284.07 : x
2. Step 2: Convert to fraction form
   101,617.34/140,217.89 = 56,284.07/x
3. Step 3: Cross multiply
   101,617.34x = 140,217.89 × 56,284.07
4. Step 4: Simplify right side
   101,617.34x = 7,892,032,553.50
5. Step 5: Solve for x
   x = 7,892,032,553.50/101,617.34
6. Step 6: Final answer
   x = 77,664.23