Finding the Fourth Proportional to 231,282.48, 347,054.96 and 91,139.52

Step by Step Solution

1. Step 1: Write the proportion equation
   231,282.48 : 347,054.96 = 91,139.52 : x
2. Step 2: Convert to fraction form
   231,282.48/347,054.96 = 91,139.52/x
3. Step 3: Cross multiply
   231,282.48x = 347,054.96 × 91,139.52
4. Step 4: Simplify right side
   231,282.48x = 31,630,422,012.32
5. Step 5: Solve for x
   x = 31,630,422,012.32/231,282.48
6. Step 6: Final answer
   x = 136,760.99