Finding the Fourth Proportional to 89,072,846.40, 122,923,553.76 and 84,991,379.52

Step by Step Solution

1. Step 1: Write the proportion equation
   89,072,846.40 : 122,923,553.76 = 84,991,379.52 : x
2. Step 2: Convert to fraction form
   89,072,846.40/122,923,553.76 = 84,991,379.52/x
3. Step 3: Cross multiply
   89,072,846.40x = 122,923,553.76 × 84,991,379.52
4. Step 4: Simplify right side
   89,072,846.40x = 10,447,442,409,563,282
5. Step 5: Solve for x
   x = 10,447,442,409,563,282/89,072,846.40
6. Step 6: Final answer
   x = 117,290,990.82