Finding the Fourth Proportional to 279,030.97, 385,075.89 and 158,174.60

Step by Step Solution

1. Step 1: Write the proportion equation
   279,030.97 : 385,075.89 = 158,174.60 : x
2. Step 2: Convert to fraction form
   279,030.97/385,075.89 = 158,174.60/x
3. Step 3: Cross multiply
   279,030.97x = 385,075.89 × 158,174.60
4. Step 4: Simplify right side
   279,030.97x = 60,909,224,870.39
5. Step 5: Solve for x
   x = 60,909,224,870.39/279,030.97
6. Step 6: Final answer
   x = 218,288.41