Finding the Fourth Proportional to 31,012,461.72, 42,751,303.74 and 19,847,724.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,012,461.72 : 42,751,303.74 = 19,847,724.12 : x
2. Step 2: Convert to fraction form
   31,012,461.72/42,751,303.74 = 19,847,724.12/x
3. Step 3: Cross multiply
   31,012,461.72x = 42,751,303.74 × 19,847,724.12
4. Step 4: Simplify right side
   31,012,461.72x = 848,516,082,401,844.25
5. Step 5: Solve for x
   x = 848,516,082,401,844.25/31,012,461.72
6. Step 6: Final answer
   x = 27,360,487.86