Finding the Fourth Proportional to 521,443.96, 782,250.54 and 161,530.72

Step by Step Solution

1. Step 1: Write the proportion equation
   521,443.96 : 782,250.54 = 161,530.72 : x
2. Step 2: Convert to fraction form
   521,443.96/782,250.54 = 161,530.72/x
3. Step 3: Cross multiply
   521,443.96x = 782,250.54 × 161,530.72
4. Step 4: Simplify right side
   521,443.96x = 126,357,492,946.59
5. Step 5: Solve for x
   x = 126,357,492,946.59/521,443.96
6. Step 6: Final answer
   x = 242,322.29