Finding the Fourth Proportional to 139,796.52, 192,934.62 and 86,070.84

Step by Step Solution

1. Step 1: Write the proportion equation
   139,796.52 : 192,934.62 = 86,070.84 : x
2. Step 2: Convert to fraction form
   139,796.52/192,934.62 = 86,070.84/x
3. Step 3: Cross multiply
   139,796.52x = 192,934.62 × 86,070.84
4. Step 4: Simplify right side
   139,796.52x = 16,606,044,808.48
5. Step 5: Solve for x
   x = 16,606,044,808.48/139,796.52
6. Step 6: Final answer
   x = 118,787.25