Finding the Fourth Proportional to 139,904.59, 193,062.72 and 76,241.02

Step by Step Solution

1. Step 1: Write the proportion equation
   139,904.59 : 193,062.72 = 76,241.02 : x
2. Step 2: Convert to fraction form
   139,904.59/193,062.72 = 76,241.02/x
3. Step 3: Cross multiply
   139,904.59x = 193,062.72 × 76,241.02
4. Step 4: Simplify right side
   139,904.59x = 14,719,298,696.77
5. Step 5: Solve for x
   x = 14,719,298,696.77/139,904.59
6. Step 6: Final answer
   x = 105,209.55