Finding the Fourth Proportional to 139,056.04, 208,438.61 and 64,225.27

Step by Step Solution

1. Step 1: Write the proportion equation
   139,056.04 : 208,438.61 = 64,225.27 : x
2. Step 2: Convert to fraction form
   139,056.04/208,438.61 = 64,225.27/x
3. Step 3: Cross multiply
   139,056.04x = 208,438.61 × 64,225.27
4. Step 4: Simplify right side
   139,056.04x = 13,387,026,244.58
5. Step 5: Solve for x
   x = 13,387,026,244.58/139,056.04
6. Step 6: Final answer
   x = 96,270.73