Finding the Fourth Proportional to 72,461.25, 99,962.51 and 51,252.21

Step by Step Solution

1. Step 1: Write the proportion equation
   72,461.25 : 99,962.51 = 51,252.21 : x
2. Step 2: Convert to fraction form
   72,461.25/99,962.51 = 51,252.21/x
3. Step 3: Cross multiply
   72,461.25x = 99,962.51 × 51,252.21
4. Step 4: Simplify right side
   72,461.25x = 5,123,299,298.39
5. Step 5: Solve for x
   x = 5,123,299,298.39/72,461.25
6. Step 6: Final answer
   x = 70,703.99