Finding the Fourth Proportional to 31,451,725.72, 43,416,773.58 and 21,144,427.48

Step by Step Solution

1. Step 1: Write the proportion equation
   31,451,725.72 : 43,416,773.58 = 21,144,427.48 : x
2. Step 2: Convert to fraction form
   31,451,725.72/43,416,773.58 = 21,144,427.48/x
3. Step 3: Cross multiply
   31,451,725.72x = 43,416,773.58 × 21,144,427.48
4. Step 4: Simplify right side
   31,451,725.72x = 918,022,820,377,890
5. Step 5: Solve for x
   x = 918,022,820,377,890/31,451,725.72
6. Step 6: Final answer
   x = 29,188,313.18