Finding the Fourth Proportional to 56,601.35, 78,110.57 and 31,110.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,601.35 : 78,110.57 = 31,110.50 : x
2. Step 2: Convert to fraction form
   56,601.35/78,110.57 = 31,110.50/x
3. Step 3: Cross multiply
   56,601.35x = 78,110.57 × 31,110.50
4. Step 4: Simplify right side
   56,601.35x = 2,430,058,341.88
5. Step 5: Solve for x
   x = 2,430,058,341.88/56,601.35
6. Step 6: Final answer
   x = 42,932.87