Finding the Fourth Proportional to 401,238,738, 601,074,904.86 and 276,446,980.17

Step by Step Solution

1. Step 1: Write the proportion equation
   401,238,738 : 601,074,904.86 = 276,446,980.17 : x
2. Step 2: Convert to fraction form
   401,238,738/601,074,904.86 = 276,446,980.17/x
3. Step 3: Cross multiply
   401,238,738x = 601,074,904.86 × 276,446,980.17
4. Step 4: Simplify right side
   401,238,738x = 166,165,342,304,517,056
5. Step 5: Solve for x
   x = 166,165,342,304,517,056/401,238,738
6. Step 6: Final answer
   x = 414,130,856.69