Finding the Fourth Proportional to 89,921.33, 134,832.33 and 56,570.03

Step by Step Solution

1. Step 1: Write the proportion equation
   89,921.33 : 134,832.33 = 56,570.03 : x
2. Step 2: Convert to fraction form
   89,921.33/134,832.33 = 56,570.03/x
3. Step 3: Cross multiply
   89,921.33x = 134,832.33 × 56,570.03
4. Step 4: Simplify right side
   89,921.33x = 7,627,468,278.91
5. Step 5: Solve for x
   x = 7,627,468,278.91/89,921.33
6. Step 6: Final answer
   x = 84,823.80