Finding the Fourth Proportional to 284,900.16, 427,410.72 and 107,402.88

Step by Step Solution

1. Step 1: Write the proportion equation
   284,900.16 : 427,410.72 = 107,402.88 : x
2. Step 2: Convert to fraction form
   284,900.16/427,410.72 = 107,402.88/x
3. Step 3: Cross multiply
   284,900.16x = 427,410.72 × 107,402.88
4. Step 4: Simplify right side
   284,900.16x = 45,905,142,270.87
5. Step 5: Solve for x
   x = 45,905,142,270.87/284,900.16
6. Step 6: Final answer
   x = 161,127.12