Finding the Fourth Proportional to 23,131,041.76, 31,921,025.28 and 12,817,936.96

Step by Step Solution

1. Step 1: Write the proportion equation
   23,131,041.76 : 31,921,025.28 = 12,817,936.96 : x
2. Step 2: Convert to fraction form
   23,131,041.76/31,921,025.28 = 12,817,936.96/x
3. Step 3: Cross multiply
   23,131,041.76x = 31,921,025.28 × 12,817,936.96
4. Step 4: Simplify right side
   23,131,041.76x = 409,161,689,737,606.38
5. Step 5: Solve for x
   x = 409,161,689,737,606.38/23,131,041.76
6. Step 6: Final answer
   x = 17,688,856.99