Finding the Fourth Proportional to 109,992, 151,828.32 and 65,280

Step by Step Solution

1. Step 1: Write the proportion equation
   109,992 : 151,828.32 = 65,280 : x
2. Step 2: Convert to fraction form
   109,992/151,828.32 = 65,280/x
3. Step 3: Cross multiply
   109,992x = 151,828.32 × 65,280
4. Step 4: Simplify right side
   109,992x = 9,911,352,729.60
5. Step 5: Solve for x
   x = 9,911,352,729.60/109,992
6. Step 6: Final answer
   x = 90,109.76