Finding the Fourth Proportional to 281,123.16, 421,741.17 and 103,631.10

Step by Step Solution

1. Step 1: Write the proportion equation
   281,123.16 : 421,741.17 = 103,631.10 : x
2. Step 2: Convert to fraction form
   281,123.16/421,741.17 = 103,631.10/x
3. Step 3: Cross multiply
   281,123.16x = 421,741.17 × 103,631.10
4. Step 4: Simplify right side
   281,123.16x = 43,705,501,362.39
5. Step 5: Solve for x
   x = 43,705,501,362.39/281,123.16
6. Step 6: Final answer
   x = 155,467.45