Finding the Fourth Proportional to 123,992.42, 171,111.45 and 67,404.02

Step by Step Solution

1. Step 1: Write the proportion equation
   123,992.42 : 171,111.45 = 67,404.02 : x
2. Step 2: Convert to fraction form
   123,992.42/171,111.45 = 67,404.02/x
3. Step 3: Cross multiply
   123,992.42x = 171,111.45 × 67,404.02
4. Step 4: Simplify right side
   123,992.42x = 11,533,599,598.03
5. Step 5: Solve for x
   x = 11,533,599,598.03/123,992.42
6. Step 6: Final answer
   x = 93,018.59