Finding the Fourth Proportional to 139,089.47, 191,941.79 and 75,426.53

Step by Step Solution

1. Step 1: Write the proportion equation
   139,089.47 : 191,941.79 = 75,426.53 : x
2. Step 2: Convert to fraction form
   139,089.47/191,941.79 = 75,426.53/x
3. Step 3: Cross multiply
   139,089.47x = 191,941.79 × 75,426.53
4. Step 4: Simplify right side
   139,089.47x = 14,477,501,844.85
5. Step 5: Solve for x
   x = 14,477,501,844.85/139,089.47
6. Step 6: Final answer
   x = 104,087.70