Finding the Fourth Proportional to 65,666.16, 90,622.80 and 37,380.96

Step by Step Solution

1. Step 1: Write the proportion equation
   65,666.16 : 90,622.80 = 37,380.96 : x
2. Step 2: Convert to fraction form
   65,666.16/90,622.80 = 37,380.96/x
3. Step 3: Cross multiply
   65,666.16x = 90,622.80 × 37,380.96
4. Step 4: Simplify right side
   65,666.16x = 3,387,567,261.89
5. Step 5: Solve for x
   x = 3,387,567,261.89/65,666.16
6. Step 6: Final answer
   x = 51,587.72