Finding the Fourth Proportional to 392,499,748.17, 541,675,077.82 and 225,243,059.29

Step by Step Solution

1. Step 1: Write the proportion equation
   392,499,748.17 : 541,675,077.82 = 225,243,059.29 : x
2. Step 2: Convert to fraction form
   392,499,748.17/541,675,077.82 = 225,243,059.29/x
3. Step 3: Cross multiply
   392,499,748.17x = 541,675,077.82 × 225,243,059.29
4. Step 4: Simplify right side
   392,499,748.17x = 122,008,551,667,408,320
5. Step 5: Solve for x
   x = 122,008,551,667,408,320/392,499,748.17
6. Step 6: Final answer
   x = 310,850,012.61