Finding the Fourth Proportional to 152,640.69, 228,995.91 and 52,800.81

Step by Step Solution

1. Step 1: Write the proportion equation
   152,640.69 : 228,995.91 = 52,800.81 : x
2. Step 2: Convert to fraction form
   152,640.69/228,995.91 = 52,800.81/x
3. Step 3: Cross multiply
   152,640.69x = 228,995.91 × 52,800.81
4. Step 4: Simplify right side
   152,640.69x = 12,091,169,534.69
5. Step 5: Solve for x
   x = 12,091,169,534.69/152,640.69
6. Step 6: Final answer
   x = 79,213.28