Finding the Fourth Proportional to 53,488.62, 73,811.37 and 31,978.80

Step by Step Solution

1. Step 1: Write the proportion equation
   53,488.62 : 73,811.37 = 31,978.80 : x
2. Step 2: Convert to fraction form
   53,488.62/73,811.37 = 31,978.80/x
3. Step 3: Cross multiply
   53,488.62x = 73,811.37 × 31,978.80
4. Step 4: Simplify right side
   53,488.62x = 2,360,399,038.96
5. Step 5: Solve for x
   x = 2,360,399,038.96/53,488.62
6. Step 6: Final answer
   x = 44,128.99