Finding the Fourth Proportional to 97,498.89, 146,022.35 and 71,138.25

Step by Step Solution

1. Step 1: Write the proportion equation
   97,498.89 : 146,022.35 = 71,138.25 : x
2. Step 2: Convert to fraction form
   97,498.89/146,022.35 = 71,138.25/x
3. Step 3: Cross multiply
   97,498.89x = 146,022.35 × 71,138.25
4. Step 4: Simplify right side
   97,498.89x = 10,387,774,084.20
5. Step 5: Solve for x
   x = 10,387,774,084.20/97,498.89
6. Step 6: Final answer
   x = 106,542.49