Finding the Fourth Proportional to 89,809.86, 123,938.45 and 49,525.12

Step by Step Solution

1. Step 1: Write the proportion equation
   89,809.86 : 123,938.45 = 49,525.12 : x
2. Step 2: Convert to fraction form
   89,809.86/123,938.45 = 49,525.12/x
3. Step 3: Cross multiply
   89,809.86x = 123,938.45 × 49,525.12
4. Step 4: Simplify right side
   89,809.86x = 6,138,066,980.46
5. Step 5: Solve for x
   x = 6,138,066,980.46/89,809.86
6. Step 6: Final answer
   x = 68,345.13