Finding the Fourth Proportional to 72,053.58, 99,341.49 and 59,085.09

Step by Step Solution

1. Step 1: Write the proportion equation
   72,053.58 : 99,341.49 = 59,085.09 : x
2. Step 2: Convert to fraction form
   72,053.58/99,341.49 = 59,085.09/x
3. Step 3: Cross multiply
   72,053.58x = 99,341.49 × 59,085.09
4. Step 4: Simplify right side
   72,053.58x = 5,869,600,877.38
5. Step 5: Solve for x
   x = 5,869,600,877.38/72,053.58
6. Step 6: Final answer
   x = 81,461.61