Finding the Fourth Proportional to 89,407, 123,381.16 and 48,570.80

Step by Step Solution

1. Step 1: Write the proportion equation
   89,407 : 123,381.16 = 48,570.80 : x
2. Step 2: Convert to fraction form
   89,407/123,381.16 = 48,570.80/x
3. Step 3: Cross multiply
   89,407x = 123,381.16 × 48,570.80
4. Step 4: Simplify right side
   89,407x = 5,992,721,646.13
5. Step 5: Solve for x
   x = 5,992,721,646.13/89,407
6. Step 6: Final answer
   x = 67,027.43