Finding the Fourth Proportional to 123,202,930, 169,992,862.18 and 72,942,191.79

Step by Step Solution

1. Step 1: Write the proportion equation
   123,202,930 : 169,992,862.18 = 72,942,191.79 : x
2. Step 2: Convert to fraction form
   123,202,930/169,992,862.18 = 72,942,191.79/x
3. Step 3: Cross multiply
   123,202,930x = 169,992,862.18 × 72,942,191.79
4. Step 4: Simplify right side
   123,202,930x = 12,399,651,956,064,600
5. Step 5: Solve for x
   x = 12,399,651,956,064,600/123,202,930
6. Step 6: Final answer
   x = 100,644,132.05