Finding the Fourth Proportional to 139,068.88, 191,914.88 and 75,406.60

Step by Step Solution

1. Step 1: Write the proportion equation
   139,068.88 : 191,914.88 = 75,406.60 : x
2. Step 2: Convert to fraction form
   139,068.88/191,914.88 = 75,406.60/x
3. Step 3: Cross multiply
   139,068.88x = 191,914.88 × 75,406.60
4. Step 4: Simplify right side
   139,068.88x = 14,471,648,590.21
5. Step 5: Solve for x
   x = 14,471,648,590.21/139,068.88
6. Step 6: Final answer
   x = 104,061.01