Finding the Fourth Proportional to 142,818.84, 197,129.16 and 89,071.56

Step by Step Solution

1. Step 1: Write the proportion equation
   142,818.84 : 197,129.16 = 89,071.56 : x
2. Step 2: Convert to fraction form
   142,818.84/197,129.16 = 89,071.56/x
3. Step 3: Cross multiply
   142,818.84x = 197,129.16 × 89,071.56
4. Step 4: Simplify right side
   142,818.84x = 17,558,601,802.69
5. Step 5: Solve for x
   x = 17,558,601,802.69/142,818.84
6. Step 6: Final answer
   x = 122,943.18