Finding the Fourth Proportional to 238,619.34, 357,920.73 and 61,128.09

Step by Step Solution

1. Step 1: Write the proportion equation
   238,619.34 : 357,920.73 = 61,128.09 : x
2. Step 2: Convert to fraction form
   238,619.34/357,920.73 = 61,128.09/x
3. Step 3: Cross multiply
   238,619.34x = 357,920.73 × 61,128.09
4. Step 4: Simplify right side
   238,619.34x = 21,879,010,596.31
5. Step 5: Solve for x
   x = 21,879,010,596.31/238,619.34
6. Step 6: Final answer
   x = 91,690.01