Finding the Fourth Proportional to 53,196.81, 72,879.33 and 51,202.59

Step by Step Solution

1. Step 1: Write the proportion equation
   53,196.81 : 72,879.33 = 51,202.59 : x
2. Step 2: Convert to fraction form
   53,196.81/72,879.33 = 51,202.59/x
3. Step 3: Cross multiply
   53,196.81x = 72,879.33 × 51,202.59
4. Step 4: Simplify right side
   53,196.81x = 3,731,610,453.46
5. Step 5: Solve for x
   x = 3,731,610,453.46/53,196.81
6. Step 6: Final answer
   x = 70,147.26