Finding the Fourth Proportional to 140,926.94, 210,860.72 and 98,889.05

Step by Step Solution

1. Step 1: Write the proportion equation
   140,926.94 : 210,860.72 = 98,889.05 : x
2. Step 2: Convert to fraction form
   140,926.94/210,860.72 = 98,889.05/x
3. Step 3: Cross multiply
   140,926.94x = 210,860.72 × 98,889.05
4. Step 4: Simplify right side
   140,926.94x = 20,851,816,686.66
5. Step 5: Solve for x
   x = 20,851,816,686.66/140,926.94
6. Step 6: Final answer
   x = 147,961.89