Finding the Fourth Proportional to 648,195,746.92, 972,296,113.56 and 156,908,212.72

Step by Step Solution

1. Step 1: Write the proportion equation
   648,195,746.92 : 972,296,113.56 = 156,908,212.72 : x
2. Step 2: Convert to fraction form
   648,195,746.92/972,296,113.56 = 156,908,212.72/x
3. Step 3: Cross multiply
   648,195,746.92x = 972,296,113.56 × 156,908,212.72
4. Step 4: Simplify right side
   648,195,746.92x = 152,561,245,413,301,760
5. Step 5: Solve for x
   x = 152,561,245,413,301,760/648,195,746.92
6. Step 6: Final answer
   x = 235,362,922.60