Finding the Fourth Proportional to 83,700.49, 115,488.71 and 49,720.43

Step by Step Solution

1. Step 1: Write the proportion equation
   83,700.49 : 115,488.71 = 49,720.43 : x
2. Step 2: Convert to fraction form
   83,700.49/115,488.71 = 49,720.43/x
3. Step 3: Cross multiply
   83,700.49x = 115,488.71 × 49,720.43
4. Step 4: Simplify right side
   83,700.49x = 5,742,148,321.35
5. Step 5: Solve for x
   x = 5,742,148,321.35/83,700.49
6. Step 6: Final answer
   x = 68,603.52