Finding the Fourth Proportional to 121,404.02, 167,538.17 and 67,691.30

Step by Step Solution

1. Step 1: Write the proportion equation
   121,404.02 : 167,538.17 = 67,691.30 : x
2. Step 2: Convert to fraction form
   121,404.02/167,538.17 = 67,691.30/x
3. Step 3: Cross multiply
   121,404.02x = 167,538.17 × 67,691.30
4. Step 4: Simplify right side
   121,404.02x = 11,340,875,858.46
5. Step 5: Solve for x
   x = 11,340,875,858.46/121,404.02
6. Step 6: Final answer
   x = 93,414.34