Finding the Fourth Proportional to 189,199.69, 261,097.61 and 103,157.98

Step by Step Solution

1. Step 1: Write the proportion equation
   189,199.69 : 261,097.61 = 103,157.98 : x
2. Step 2: Convert to fraction form
   189,199.69/261,097.61 = 103,157.98/x
3. Step 3: Cross multiply
   189,199.69x = 261,097.61 × 103,157.98
4. Step 4: Simplify right side
   189,199.69x = 26,934,300,861.89
5. Step 5: Solve for x
   x = 26,934,300,861.89/189,199.69
6. Step 6: Final answer
   x = 142,359.12