Finding the Fourth Proportional to 1,036,253,706.72, 1,555,079,953.91 and 405,907,577.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036,253,706.72 : 1,555,079,953.91 = 405,907,577.48 : x
2. Step 2: Convert to fraction form
   1,036,253,706.72/1,555,079,953.91 = 405,907,577.48/x
3. Step 3: Cross multiply
   1,036,253,706.72x = 1,555,079,953.91 × 405,907,577.48
4. Step 4: Simplify right side
   1,036,253,706.72x = 631,218,736,869,513,216
5. Step 5: Solve for x
   x = 631,218,736,869,513,216/1,036,253,706.72
6. Step 6: Final answer
   x = 609,135,323.50