Finding the Fourth Proportional to 139,124.73, 208,408.86 and 64,142.22

Step by Step Solution

1. Step 1: Write the proportion equation
   139,124.73 : 208,408.86 = 64,142.22 : x
2. Step 2: Convert to fraction form
   139,124.73/208,408.86 = 64,142.22/x
3. Step 3: Cross multiply
   139,124.73x = 208,408.86 × 64,142.22
4. Step 4: Simplify right side
   139,124.73x = 13,367,806,948.07
5. Step 5: Solve for x
   x = 13,367,806,948.07/139,124.73
6. Step 6: Final answer
   x = 96,085.05