Finding the Fourth Proportional to 89,564.76, 134,142.90 and 42,850.68

Step by Step Solution

1. Step 1: Write the proportion equation
   89,564.76 : 134,142.90 = 42,850.68 : x
2. Step 2: Convert to fraction form
   89,564.76/134,142.90 = 42,850.68/x
3. Step 3: Cross multiply
   89,564.76x = 134,142.90 × 42,850.68
4. Step 4: Simplify right side
   89,564.76x = 5,748,114,482.17
5. Step 5: Solve for x
   x = 5,748,114,482.17/89,564.76
6. Step 6: Final answer
   x = 64,178.30