Finding the Fourth Proportional to 123,699.37, 170,704.42 and 67,109.53

Step by Step Solution

1. Step 1: Write the proportion equation
   123,699.37 : 170,704.42 = 67,109.53 : x
2. Step 2: Convert to fraction form
   123,699.37/170,704.42 = 67,109.53/x
3. Step 3: Cross multiply
   123,699.37x = 170,704.42 × 67,109.53
4. Step 4: Simplify right side
   123,699.37x = 11,455,893,905.77
5. Step 5: Solve for x
   x = 11,455,893,905.77/123,699.37
6. Step 6: Final answer
   x = 92,610.77