Finding the Fourth Proportional to 65,978.56, 91,055.52 and 37,693.12

Step by Step Solution

1. Step 1: Write the proportion equation
   65,978.56 : 91,055.52 = 37,693.12 : x
2. Step 2: Convert to fraction form
   65,978.56/91,055.52 = 37,693.12/x
3. Step 3: Cross multiply
   65,978.56x = 91,055.52 × 37,693.12
4. Step 4: Simplify right side
   65,978.56x = 3,432,166,642.02
5. Step 5: Solve for x
   x = 3,432,166,642.02/65,978.56
6. Step 6: Final answer
   x = 52,019.42