Finding the Fourth Proportional to 352,085.15, 528,219.86 and 152,358.72

Step by Step Solution

1. Step 1: Write the proportion equation
   352,085.15 : 528,219.86 = 152,358.72 : x
2. Step 2: Convert to fraction form
   352,085.15/528,219.86 = 152,358.72/x
3. Step 3: Cross multiply
   352,085.15x = 528,219.86 × 152,358.72
4. Step 4: Simplify right side
   352,085.15x = 80,478,900,986.39
5. Step 5: Solve for x
   x = 80,478,900,986.39/352,085.15
6. Step 6: Final answer
   x = 228,577.95