Finding the Fourth Proportional to 189,196.60, 261,093.34 and 103,154.88

Step by Step Solution

1. Step 1: Write the proportion equation
   189,196.60 : 261,093.34 = 103,154.88 : x
2. Step 2: Convert to fraction form
   189,196.60/261,093.34 = 103,154.88/x
3. Step 3: Cross multiply
   189,196.60x = 261,093.34 × 103,154.88
4. Step 4: Simplify right side
   189,196.60x = 26,933,051,061.57
5. Step 5: Solve for x
   x = 26,933,051,061.57/189,196.60
6. Step 6: Final answer
   x = 142,354.84