Finding the Fourth Proportional to 139,088.76, 191,942.70 and 75,426.12

Step by Step Solution

1. Step 1: Write the proportion equation
   139,088.76 : 191,942.70 = 75,426.12 : x
2. Step 2: Convert to fraction form
   139,088.76/191,942.70 = 75,426.12/x
3. Step 3: Cross multiply
   139,088.76x = 191,942.70 × 75,426.12
4. Step 4: Simplify right side
   139,088.76x = 14,477,493,123.32
5. Step 5: Solve for x
   x = 14,477,493,123.32/139,088.76
6. Step 6: Final answer
   x = 104,088.16