Finding the Fourth Proportional to 101,404.31, 139,936.70 and 56,081.46

Step by Step Solution

1. Step 1: Write the proportion equation
   101,404.31 : 139,936.70 = 56,081.46 : x
2. Step 2: Convert to fraction form
   101,404.31/139,936.70 = 56,081.46/x
3. Step 3: Cross multiply
   101,404.31x = 139,936.70 × 56,081.46
4. Step 4: Simplify right side
   101,404.31x = 7,847,854,163.17
5. Step 5: Solve for x
   x = 7,847,854,163.17/101,404.31
6. Step 6: Final answer
   x = 77,391.73