Finding the Fourth Proportional to 238,281, 357,345.78 and 78,320.04

Step by Step Solution

1. Step 1: Write the proportion equation
   238,281 : 357,345.78 = 78,320.04 : x
2. Step 2: Convert to fraction form
   238,281/357,345.78 = 78,320.04/x
3. Step 3: Cross multiply
   238,281x = 357,345.78 × 78,320.04
4. Step 4: Simplify right side
   238,281x = 27,987,335,783.43
5. Step 5: Solve for x
   x = 27,987,335,783.43/238,281
6. Step 6: Final answer
   x = 117,455.17