Finding the Fourth Proportional to 123,433.02, 170,210.16 and 105,587.10

Step by Step Solution

1. Step 1: Write the proportion equation
   123,433.02 : 170,210.16 = 105,587.10 : x
2. Step 2: Convert to fraction form
   123,433.02/170,210.16 = 105,587.10/x
3. Step 3: Cross multiply
   123,433.02x = 170,210.16 × 105,587.10
4. Step 4: Simplify right side
   123,433.02x = 17,971,997,184.94
5. Step 5: Solve for x
   x = 17,971,997,184.94/123,433.02
6. Step 6: Final answer
   x = 145,601.21