Finding the Fourth Proportional to 139,711.02, 209,566.59 and 46,216.77

Step by Step Solution

1. Step 1: Write the proportion equation
   139,711.02 : 209,566.59 = 46,216.77 : x
2. Step 2: Convert to fraction form
   139,711.02/209,566.59 = 46,216.77/x
3. Step 3: Cross multiply
   139,711.02x = 209,566.59 × 46,216.77
4. Step 4: Simplify right side
   139,711.02x = 9,685,490,889.71
5. Step 5: Solve for x
   x = 9,685,490,889.71/139,711.02
6. Step 6: Final answer
   x = 69,325.17