Finding the Fourth Proportional to 456,749,446.72, 630,314,927.76 and 247,905,664.96

Step by Step Solution

1. Step 1: Write the proportion equation
   456,749,446.72 : 630,314,927.76 = 247,905,664.96 : x
2. Step 2: Convert to fraction form
   456,749,446.72/630,314,927.76 = 247,905,664.96/x
3. Step 3: Cross multiply
   456,749,446.72x = 630,314,927.76 × 247,905,664.96
4. Step 4: Simplify right side
   456,749,446.72x = 156,258,641,300,557,152
5. Step 5: Solve for x
   x = 156,258,641,300,557,152/456,749,446.72
6. Step 6: Final answer
   x = 342,110,192.85