Finding the Fourth Proportional to 300,730,495.50, 414,231,815.43 and 212,471,281.98

Step by Step Solution

1. Step 1: Write the proportion equation
   300,730,495.50 : 414,231,815.43 = 212,471,281.98 : x
2. Step 2: Convert to fraction form
   300,730,495.50/414,231,815.43 = 212,471,281.98/x
3. Step 3: Cross multiply
   300,730,495.50x = 414,231,815.43 × 212,471,281.98
4. Step 4: Simplify right side
   300,730,495.50x = 88,012,364,861,314,848
5. Step 5: Solve for x
   x = 88,012,364,861,314,848/300,730,495.50
6. Step 6: Final answer
   x = 292,661,922.15