Finding the Fourth Proportional to 56,529.82, 78,013.83 and 31,379.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,529.82 : 78,013.83 = 31,379.50 : x
2. Step 2: Convert to fraction form
   56,529.82/78,013.83 = 31,379.50/x
3. Step 3: Cross multiply
   56,529.82x = 78,013.83 × 31,379.50
4. Step 4: Simplify right side
   56,529.82x = 2,448,034,978.49
5. Step 5: Solve for x
   x = 2,448,034,978.49/56,529.82
6. Step 6: Final answer
   x = 43,305.20