Finding the Fourth Proportional to 139,090.16, 191,943.06 and 75,426.86

Step by Step Solution

1. Step 1: Write the proportion equation
   139,090.16 : 191,943.06 = 75,426.86 : x
2. Step 2: Convert to fraction form
   139,090.16/191,943.06 = 75,426.86/x
3. Step 3: Cross multiply
   139,090.16x = 191,943.06 × 75,426.86
4. Step 4: Simplify right side
   139,090.16x = 14,477,662,314.59
5. Step 5: Solve for x
   x = 14,477,662,314.59/139,090.16
6. Step 6: Final answer
   x = 104,088.33