Finding the Fourth Proportional to 153,078.84, 229,642.02 and 78,158.34

Step by Step Solution

1. Step 1: Write the proportion equation
   153,078.84 : 229,642.02 = 78,158.34 : x
2. Step 2: Convert to fraction form
   153,078.84/229,642.02 = 78,158.34/x
3. Step 3: Cross multiply
   153,078.84x = 229,642.02 × 78,158.34
4. Step 4: Simplify right side
   153,078.84x = 17,948,439,077.45
5. Step 5: Solve for x
   x = 17,948,439,077.45/153,078.84
6. Step 6: Final answer
   x = 117,249.64