Finding the Fourth Proportional to 103,436.60, 142,725.24 and 61,003.53

Step by Step Solution

1. Step 1: Write the proportion equation
   103,436.60 : 142,725.24 = 61,003.53 : x
2. Step 2: Convert to fraction form
   103,436.60/142,725.24 = 61,003.53/x
3. Step 3: Cross multiply
   103,436.60x = 142,725.24 × 61,003.53
4. Step 4: Simplify right side
   103,436.60x = 8,706,743,460.10
5. Step 5: Solve for x
   x = 8,706,743,460.10/103,436.60
6. Step 6: Final answer
   x = 84,174.69