Finding the Fourth Proportional to 89,985.30, 134,783.55 and 74,433.30

Step by Step Solution

1. Step 1: Write the proportion equation
   89,985.30 : 134,783.55 = 74,433.30 : x
2. Step 2: Convert to fraction form
   89,985.30/134,783.55 = 74,433.30/x
3. Step 3: Cross multiply
   89,985.30x = 134,783.55 × 74,433.30
4. Step 4: Simplify right side
   89,985.30x = 10,032,384,412.22
5. Step 5: Solve for x
   x = 10,032,384,412.22/89,985.30
6. Step 6: Final answer
   x = 111,489.15