Finding the Fourth Proportional to 248,784.90, 373,323.15 and 91,029.30

Step by Step Solution

1. Step 1: Write the proportion equation
   248,784.90 : 373,323.15 = 91,029.30 : x
2. Step 2: Convert to fraction form
   248,784.90/373,323.15 = 91,029.30/x
3. Step 3: Cross multiply
   248,784.90x = 373,323.15 × 91,029.30
4. Step 4: Simplify right side
   248,784.90x = 33,983,345,018.30
5. Step 5: Solve for x
   x = 33,983,345,018.30/248,784.90
6. Step 6: Final answer
   x = 136,597.30