Finding the Fourth Proportional to 262,071.86, 361,886.00 and 248,619.65

Step by Step Solution

1. Step 1: Write the proportion equation
   262,071.86 : 361,886.00 = 248,619.65 : x
2. Step 2: Convert to fraction form
   262,071.86/361,886.00 = 248,619.65/x
3. Step 3: Cross multiply
   262,071.86x = 361,886.00 × 248,619.65
4. Step 4: Simplify right side
   262,071.86x = 89,971,967,607.37
5. Step 5: Solve for x
   x = 89,971,967,607.37/262,071.86
6. Step 6: Final answer
   x = 343,310.30