Finding the Fourth Proportional to 89,784.45, 123,897.20 and 49,499.91

Step by Step Solution

1. Step 1: Write the proportion equation
   89,784.45 : 123,897.20 = 49,499.91 : x
2. Step 2: Convert to fraction form
   89,784.45/123,897.20 = 49,499.91/x
3. Step 3: Cross multiply
   89,784.45x = 123,897.20 × 49,499.91
4. Step 4: Simplify right side
   89,784.45x = 6,132,900,001.75
5. Step 5: Solve for x
   x = 6,132,900,001.75/89,784.45
6. Step 6: Final answer
   x = 68,306.93