Finding the Fourth Proportional to 156,315.40, 234,280.72 and 88,904

Step by Step Solution

1. Step 1: Write the proportion equation
   156,315.40 : 234,280.72 = 88,904 : x
2. Step 2: Convert to fraction form
   156,315.40/234,280.72 = 88,904/x
3. Step 3: Cross multiply
   156,315.40x = 234,280.72 × 88,904
4. Step 4: Simplify right side
   156,315.40x = 20,828,493,130.88
5. Step 5: Solve for x
   x = 20,828,493,130.88/156,315.40
6. Step 6: Final answer
   x = 133,246.58