Finding the Fourth Proportional to 31,451,404.82, 43,416,330.95 and 21,144,106.62

Step by Step Solution

1. Step 1: Write the proportion equation
   31,451,404.82 : 43,416,330.95 = 21,144,106.62 : x
2. Step 2: Convert to fraction form
   31,451,404.82/43,416,330.95 = 21,144,106.62/x
3. Step 3: Cross multiply
   31,451,404.82x = 43,416,330.95 × 21,144,106.62
4. Step 4: Simplify right side
   31,451,404.82x = 917,999,530,708,866.25
5. Step 5: Solve for x
   x = 917,999,530,708,866.25/31,451,404.82
6. Step 6: Final answer
   x = 29,187,870.50