Finding the Fourth Proportional to 661,515,944, 912,892,002.72 and 368,229,796.16

Step by Step Solution

1. Step 1: Write the proportion equation
   661,515,944 : 912,892,002.72 = 368,229,796.16 : x
2. Step 2: Convert to fraction form
   661,515,944/912,892,002.72 = 368,229,796.16/x
3. Step 3: Cross multiply
   661,515,944x = 912,892,002.72 × 368,229,796.16
4. Step 4: Simplify right side
   661,515,944x = 336,154,036,077,679,808
5. Step 5: Solve for x
   x = 336,154,036,077,679,808/661,515,944
6. Step 6: Final answer
   x = 508,157,118.70