Finding the Fourth Proportional to 65,962.06, 91,023.30 and 42,086.20

Step by Step Solution

1. Step 1: Write the proportion equation
   65,962.06 : 91,023.30 = 42,086.20 : x
2. Step 2: Convert to fraction form
   65,962.06/91,023.30 = 42,086.20/x
3. Step 3: Cross multiply
   65,962.06x = 91,023.30 × 42,086.20
4. Step 4: Simplify right side
   65,962.06x = 3,830,824,808.46
5. Step 5: Solve for x
   x = 3,830,824,808.46/65,962.06
6. Step 6: Final answer
   x = 58,076.19