Finding the Fourth Proportional to 120,536,477.82, 166,375,740.06 and 78,726,934.80

Step by Step Solution

1. Step 1: Write the proportion equation
   120,536,477.82 : 166,375,740.06 = 78,726,934.80 : x
2. Step 2: Convert to fraction form
   120,536,477.82/166,375,740.06 = 78,726,934.80/x
3. Step 3: Cross multiply
   120,536,477.82x = 166,375,740.06 × 78,726,934.80
4. Step 4: Simplify right side
   120,536,477.82x = 13,098,252,040,005,368
5. Step 5: Solve for x
   x = 13,098,252,040,005,368/120,536,477.82
6. Step 6: Final answer
   x = 108,666,291.54