Finding the Fourth Proportional to 65,955.48, 91,014.22 and 42,079.60

Step by Step Solution

1. Step 1: Write the proportion equation
   65,955.48 : 91,014.22 = 42,079.60 : x
2. Step 2: Convert to fraction form
   65,955.48/91,014.22 = 42,079.60/x
3. Step 3: Cross multiply
   65,955.48x = 91,014.22 × 42,079.60
4. Step 4: Simplify right side
   65,955.48x = 3,829,841,971.91
5. Step 5: Solve for x
   x = 3,829,841,971.91/65,955.48
6. Step 6: Final answer
   x = 58,067.08