Finding the Fourth Proportional to 199,386.48, 299,079.69 and 59,143.89

Step by Step Solution

1. Step 1: Write the proportion equation
   199,386.48 : 299,079.69 = 59,143.89 : x
2. Step 2: Convert to fraction form
   199,386.48/299,079.69 = 59,143.89/x
3. Step 3: Cross multiply
   199,386.48x = 299,079.69 × 59,143.89
4. Step 4: Simplify right side
   199,386.48x = 17,688,736,286.59
5. Step 5: Solve for x
   x = 17,688,736,286.59/199,386.48
6. Step 6: Final answer
   x = 88,715.83