Finding the Fourth Proportional to 108,128.37, 162,174.95 and 37,991.31

Step by Step Solution

1. Step 1: Write the proportion equation
   108,128.37 : 162,174.95 = 37,991.31 : x
2. Step 2: Convert to fraction form
   108,128.37/162,174.95 = 37,991.31/x
3. Step 3: Cross multiply
   108,128.37x = 162,174.95 × 37,991.31
4. Step 4: Simplify right side
   108,128.37x = 6,161,238,609.73
5. Step 5: Solve for x
   x = 6,161,238,609.73/108,128.37
6. Step 6: Final answer
   x = 56,980.78