Finding the Fourth Proportional to 89,102.68, 123,123.90 and 84,783.96

Step by Step Solution

1. Step 1: Write the proportion equation
   89,102.68 : 123,123.90 = 84,783.96 : x
2. Step 2: Convert to fraction form
   89,102.68/123,123.90 = 84,783.96/x
3. Step 3: Cross multiply
   89,102.68x = 123,123.90 × 84,783.96
4. Step 4: Simplify right side
   89,102.68x = 10,438,931,812.64
5. Step 5: Solve for x
   x = 10,438,931,812.64/89,102.68
6. Step 6: Final answer
   x = 117,156.20