Finding the Fourth Proportional to 142,071.78, 212,834.25 and 88,784.58

Step by Step Solution

1. Step 1: Write the proportion equation
   142,071.78 : 212,834.25 = 88,784.58 : x
2. Step 2: Convert to fraction form
   142,071.78/212,834.25 = 88,784.58/x
3. Step 3: Cross multiply
   142,071.78x = 212,834.25 × 88,784.58
4. Step 4: Simplify right side
   142,071.78x = 18,896,399,495.87
5. Step 5: Solve for x
   x = 18,896,399,495.87/142,071.78
6. Step 6: Final answer
   x = 133,006.00