Finding the Fourth Proportional to 140,897.55, 194,458.56 and 87,199.89

Step by Step Solution

1. Step 1: Write the proportion equation
   140,897.55 : 194,458.56 = 87,199.89 : x
2. Step 2: Convert to fraction form
   140,897.55/194,458.56 = 87,199.89/x
3. Step 3: Cross multiply
   140,897.55x = 194,458.56 × 87,199.89
4. Step 4: Simplify right side
   140,897.55x = 16,956,765,041.56
5. Step 5: Solve for x
   x = 16,956,765,041.56/140,897.55
6. Step 6: Final answer
   x = 120,348.19