Finding the Fourth Proportional to 153,040.69, 229,429.56 and 53,187.91

Step by Step Solution

1. Step 1: Write the proportion equation
   153,040.69 : 229,429.56 = 53,187.91 : x
2. Step 2: Convert to fraction form
   153,040.69/229,429.56 = 53,187.91/x
3. Step 3: Cross multiply
   153,040.69x = 229,429.56 × 53,187.91
4. Step 4: Simplify right side
   153,040.69x = 12,202,878,015.59
5. Step 5: Solve for x
   x = 12,202,878,015.59/153,040.69
6. Step 6: Final answer
   x = 79,736.17