Finding the Fourth Proportional to 201,820.16, 278,499.60 and 116,922.56

Step by Step Solution

1. Step 1: Write the proportion equation
   201,820.16 : 278,499.60 = 116,922.56 : x
2. Step 2: Convert to fraction form
   201,820.16/278,499.60 = 116,922.56/x
3. Step 3: Cross multiply
   201,820.16x = 278,499.60 × 116,922.56
4. Step 4: Simplify right side
   201,820.16x = 32,562,886,190.98
5. Step 5: Solve for x
   x = 32,562,886,190.98/201,820.16
6. Step 6: Final answer
   x = 161,346.05