Finding the Fourth Proportional to 236,484.51, 326,355.50 and 129,061.45

Step by Step Solution

1. Step 1: Write the proportion equation
   236,484.51 : 326,355.50 = 129,061.45 : x
2. Step 2: Convert to fraction form
   236,484.51/326,355.50 = 129,061.45/x
3. Step 3: Cross multiply
   236,484.51x = 326,355.50 × 129,061.45
4. Step 4: Simplify right side
   236,484.51x = 42,119,914,045.48
5. Step 5: Solve for x
   x = 42,119,914,045.48/236,484.51
6. Step 6: Final answer
   x = 178,108.55