Finding the Fourth Proportional to 139,271.60, 192,071.04 and 112,405.52

Step by Step Solution

1. Step 1: Write the proportion equation
   139,271.60 : 192,071.04 = 112,405.52 : x
2. Step 2: Convert to fraction form
   139,271.60/192,071.04 = 112,405.52/x
3. Step 3: Cross multiply
   139,271.60x = 192,071.04 × 112,405.52
4. Step 4: Simplify right side
   139,271.60x = 21,589,845,128.14
5. Step 5: Solve for x
   x = 21,589,845,128.14/139,271.60
6. Step 6: Final answer
   x = 155,019.72