Finding the Fourth Proportional to 33,131,097.60, 49,667,097.60 and 12,931,641.60

Step by Step Solution

1. Step 1: Write the proportion equation
   33,131,097.60 : 49,667,097.60 = 12,931,641.60 : x
2. Step 2: Convert to fraction form
   33,131,097.60/49,667,097.60 = 12,931,641.60/x
3. Step 3: Cross multiply
   33,131,097.60x = 49,667,097.60 × 12,931,641.60
4. Step 4: Simplify right side
   33,131,097.60x = 642,277,105,475,420.12
5. Step 5: Solve for x
   x = 642,277,105,475,420.12/33,131,097.60
6. Step 6: Final answer
   x = 19,385,928.99