Finding the Fourth Proportional to 123,390,003.13, 170,178,917.62 and 108,473,434.31

Step by Step Solution

1. Step 1: Write the proportion equation
   123,390,003.13 : 170,178,917.62 = 108,473,434.31 : x
2. Step 2: Convert to fraction form
   123,390,003.13/170,178,917.62 = 108,473,434.31/x
3. Step 3: Cross multiply
   123,390,003.13x = 170,178,917.62 × 108,473,434.31
4. Step 4: Simplify right side
   123,390,003.13x = 18,459,891,640,857,604
5. Step 5: Solve for x
   x = 18,459,891,640,857,604/123,390,003.13
6. Step 6: Final answer
   x = 149,606,055.37