Finding the Fourth Proportional to 98,111.25, 135,393.54 and 53,399.25

Step by Step Solution

1. Step 1: Write the proportion equation
   98,111.25 : 135,393.54 = 53,399.25 : x
2. Step 2: Convert to fraction form
   98,111.25/135,393.54 = 53,399.25/x
3. Step 3: Cross multiply
   98,111.25x = 135,393.54 × 53,399.25
4. Step 4: Simplify right side
   98,111.25x = 7,229,913,490.85
5. Step 5: Solve for x
   x = 7,229,913,490.85/98,111.25
6. Step 6: Final answer
   x = 73,690.97