Finding the Fourth Proportional to 33,131,059.10, 49,667,039.85 and 12,931,603.10

Step by Step Solution

1. Step 1: Write the proportion equation
   33,131,059.10 : 49,667,039.85 = 12,931,603.10 : x
2. Step 2: Convert to fraction form
   33,131,059.10/49,667,039.85 = 12,931,603.10/x
3. Step 3: Cross multiply
   33,131,059.10x = 49,667,039.85 × 12,931,603.10
4. Step 4: Simplify right side
   33,131,059.10x = 642,274,446,492,083.50
5. Step 5: Solve for x
   x = 642,274,446,492,083.50/33,131,059.10
6. Step 6: Final answer
   x = 19,385,871.26