Finding the Fourth Proportional to 58,216.50, 80,338.77 and 31,720.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,216.50 : 80,338.77 = 31,720.50 : x
2. Step 2: Convert to fraction form
   58,216.50/80,338.77 = 31,720.50/x
3. Step 3: Cross multiply
   58,216.50x = 80,338.77 × 31,720.50
4. Step 4: Simplify right side
   58,216.50x = 2,548,385,953.79
5. Step 5: Solve for x
   x = 2,548,385,953.79/58,216.50
6. Step 6: Final answer
   x = 43,774.29