Finding the Fourth Proportional to 156,814.21, 216,387.96 and 88,817.59

Step by Step Solution

1. Step 1: Write the proportion equation
   156,814.21 : 216,387.96 = 88,817.59 : x
2. Step 2: Convert to fraction form
   156,814.21/216,387.96 = 88,817.59/x
3. Step 3: Cross multiply
   156,814.21x = 216,387.96 × 88,817.59
4. Step 4: Simplify right side
   156,814.21x = 19,219,057,112.22
5. Step 5: Solve for x
   x = 19,219,057,112.22/156,814.21
6. Step 6: Final answer
   x = 122,559.41