Finding the Fourth Proportional to 148,890.51, 205,501.31 and 91,579.09

Step by Step Solution

1. Step 1: Write the proportion equation
   148,890.51 : 205,501.31 = 91,579.09 : x
2. Step 2: Convert to fraction form
   148,890.51/205,501.31 = 91,579.09/x
3. Step 3: Cross multiply
   148,890.51x = 205,501.31 × 91,579.09
4. Step 4: Simplify right side
   148,890.51x = 18,819,622,963.61
5. Step 5: Solve for x
   x = 18,819,622,963.61/148,890.51
6. Step 6: Final answer
   x = 126,399.08