Finding the Fourth Proportional to 281,003.93, 421,308.72 and 103,488.15

Step by Step Solution

1. Step 1: Write the proportion equation
   281,003.93 : 421,308.72 = 103,488.15 : x
2. Step 2: Convert to fraction form
   281,003.93/421,308.72 = 103,488.15/x
3. Step 3: Cross multiply
   281,003.93x = 421,308.72 × 103,488.15
4. Step 4: Simplify right side
   281,003.93x = 43,600,460,011.67
5. Step 5: Solve for x
   x = 43,600,460,011.67/281,003.93
6. Step 6: Final answer
   x = 155,159.61