Finding the Fourth Proportional to 139,950.72, 210,007.38 and 58,891.77

Step by Step Solution

1. Step 1: Write the proportion equation
   139,950.72 : 210,007.38 = 58,891.77 : x
2. Step 2: Convert to fraction form
   139,950.72/210,007.38 = 58,891.77/x
3. Step 3: Cross multiply
   139,950.72x = 210,007.38 × 58,891.77
4. Step 4: Simplify right side
   139,950.72x = 12,367,706,100.42
5. Step 5: Solve for x
   x = 12,367,706,100.42/139,950.72
6. Step 6: Final answer
   x = 88,371.86