Finding the Fourth Proportional to 284,483.60, 392,581.72 and 157,158

Step by Step Solution

1. Step 1: Write the proportion equation
   284,483.60 : 392,581.72 = 157,158 : x
2. Step 2: Convert to fraction form
   284,483.60/392,581.72 = 157,158/x
3. Step 3: Cross multiply
   284,483.60x = 392,581.72 × 157,158
4. Step 4: Simplify right side
   284,483.60x = 61,697,357,951.76
5. Step 5: Solve for x
   x = 61,697,357,951.76/284,483.60
6. Step 6: Final answer
   x = 216,874.92