Finding the Fourth Proportional to 142,038.90, 195,902.82 and 91,056.42

Step by Step Solution

1. Step 1: Write the proportion equation
   142,038.90 : 195,902.82 = 91,056.42 : x
2. Step 2: Convert to fraction form
   142,038.90/195,902.82 = 91,056.42/x
3. Step 3: Cross multiply
   142,038.90x = 195,902.82 × 91,056.42
4. Step 4: Simplify right side
   142,038.90x = 17,838,209,457.10
5. Step 5: Solve for x
   x = 17,838,209,457.10/142,038.90
6. Step 6: Final answer
   x = 125,586.79