Finding the Fourth Proportional to 89,005,568.38, 133,269,155.52 and 56,481,379.18

Step by Step Solution

1. Step 1: Write the proportion equation
   89,005,568.38 : 133,269,155.52 = 56,481,379.18 : x
2. Step 2: Convert to fraction form
   89,005,568.38/133,269,155.52 = 56,481,379.18/x
3. Step 3: Cross multiply
   89,005,568.38x = 133,269,155.52 × 56,481,379.18
4. Step 4: Simplify right side
   89,005,568.38x = 7,527,225,705,923,510
5. Step 5: Solve for x
   x = 7,527,225,705,923,510/89,005,568.38
6. Step 6: Final answer
   x = 84,570,278.50