Finding the Fourth Proportional to 279,019.32, 418,640.76 and 101,538.60

Step by Step Solution

1. Step 1: Write the proportion equation
   279,019.32 : 418,640.76 = 101,538.60 : x
2. Step 2: Convert to fraction form
   279,019.32/418,640.76 = 101,538.60/x
3. Step 3: Cross multiply
   279,019.32x = 418,640.76 × 101,538.60
4. Step 4: Simplify right side
   279,019.32x = 42,508,196,673.34
5. Step 5: Solve for x
   x = 42,508,196,673.34/279,019.32
6. Step 6: Final answer
   x = 152,348.58