Finding the Fourth Proportional to 65,904.88, 98,627.56 and 53,920.12

Step by Step Solution

1. Step 1: Write the proportion equation
   65,904.88 : 98,627.56 = 53,920.12 : x
2. Step 2: Convert to fraction form
   65,904.88/98,627.56 = 53,920.12/x
3. Step 3: Cross multiply
   65,904.88x = 98,627.56 × 53,920.12
4. Step 4: Simplify right side
   65,904.88x = 5,318,009,870.51
5. Step 5: Solve for x
   x = 5,318,009,870.51/65,904.88
6. Step 6: Final answer
   x = 80,692.20