Finding the Fourth Proportional to 150,743.78, 208,016.01 and 83,670.50

Step by Step Solution

1. Step 1: Write the proportion equation
   150,743.78 : 208,016.01 = 83,670.50 : x
2. Step 2: Convert to fraction form
   150,743.78/208,016.01 = 83,670.50/x
3. Step 3: Cross multiply
   150,743.78x = 208,016.01 × 83,670.50
4. Step 4: Simplify right side
   150,743.78x = 17,404,803,564.71
5. Step 5: Solve for x
   x = 17,404,803,564.71/150,743.78
6. Step 6: Final answer
   x = 115,459.51