Finding the Fourth Proportional to 238,854.76, 357,959.34 and 91,030.12

Step by Step Solution

1. Step 1: Write the proportion equation
   238,854.76 : 357,959.34 = 91,030.12 : x
2. Step 2: Convert to fraction form
   238,854.76/357,959.34 = 91,030.12/x
3. Step 3: Cross multiply
   238,854.76x = 357,959.34 × 91,030.12
4. Step 4: Simplify right side
   238,854.76x = 32,585,081,675.32
5. Step 5: Solve for x
   x = 32,585,081,675.32/238,854.76
6. Step 6: Final answer
   x = 136,422.16