Finding the Fourth Proportional to 123,069,207, 169,887,799.45 and 76,682,379.31

Step by Step Solution

1. Step 1: Write the proportion equation
   123,069,207 : 169,887,799.45 = 76,682,379.31 : x
2. Step 2: Convert to fraction form
   123,069,207/169,887,799.45 = 76,682,379.31/x
3. Step 3: Cross multiply
   123,069,207x = 169,887,799.45 × 76,682,379.31
4. Step 4: Simplify right side
   123,069,207x = 13,027,400,677,566,108
5. Step 5: Solve for x
   x = 13,027,400,677,566,108/123,069,207
6. Step 6: Final answer
   x = 105,854,266.84