Finding the Fourth Proportional to 101,733.57, 140,399.33 and 56,415.69

Step by Step Solution

1. Step 1: Write the proportion equation
   101,733.57 : 140,399.33 = 56,415.69 : x
2. Step 2: Convert to fraction form
   101,733.57/140,399.33 = 56,415.69/x
3. Step 3: Cross multiply
   101,733.57x = 140,399.33 × 56,415.69
4. Step 4: Simplify right side
   101,733.57x = 7,920,724,795.41
5. Step 5: Solve for x
   x = 7,920,724,795.41/101,733.57
6. Step 6: Final answer
   x = 77,857.53