Finding the Fourth Proportional to 156,851.69, 216,468.11 and 89,788.01

Step by Step Solution

1. Step 1: Write the proportion equation
   156,851.69 : 216,468.11 = 89,788.01 : x
2. Step 2: Convert to fraction form
   156,851.69/216,468.11 = 89,788.01/x
3. Step 3: Cross multiply
   156,851.69x = 216,468.11 × 89,788.01
4. Step 4: Simplify right side
   156,851.69x = 19,436,239,967.49
5. Step 5: Solve for x
   x = 19,436,239,967.49/156,851.69
6. Step 6: Final answer
   x = 123,914.77