Finding the Fourth Proportional to 153,109.41, 229,710.78 and 78,282.09

Step by Step Solution

1. Step 1: Write the proportion equation
   153,109.41 : 229,710.78 = 78,282.09 : x
2. Step 2: Convert to fraction form
   153,109.41/229,710.78 = 78,282.09/x
3. Step 3: Cross multiply
   153,109.41x = 229,710.78 × 78,282.09
4. Step 4: Simplify right side
   153,109.41x = 17,982,240,528.21
5. Step 5: Solve for x
   x = 17,982,240,528.21/153,109.41
6. Step 6: Final answer
   x = 117,447.00