Finding the Fourth Proportional to 254,112,754.72, 380,983,302.96 and 81,491,308.96

Step by Step Solution

1. Step 1: Write the proportion equation
   254,112,754.72 : 380,983,302.96 = 81,491,308.96 : x
2. Step 2: Convert to fraction form
   254,112,754.72/380,983,302.96 = 81,491,308.96/x
3. Step 3: Cross multiply
   254,112,754.72x = 380,983,302.96 × 81,491,308.96
4. Step 4: Simplify right side
   254,112,754.72x = 31,046,828,050,114,640
5. Step 5: Solve for x
   x = 31,046,828,050,114,640/254,112,754.72
6. Step 6: Final answer
   x = 122,177,369.98