Finding the Fourth Proportional to 152,856.72, 229,295.61 and 64,020.78

Step by Step Solution

1. Step 1: Write the proportion equation
   152,856.72 : 229,295.61 = 64,020.78 : x
2. Step 2: Convert to fraction form
   152,856.72/229,295.61 = 64,020.78/x
3. Step 3: Cross multiply
   152,856.72x = 229,295.61 × 64,020.78
4. Step 4: Simplify right side
   152,856.72x = 14,679,683,802.78
5. Step 5: Solve for x
   x = 14,679,683,802.78/152,856.72
6. Step 6: Final answer
   x = 96,035.58