Finding the Fourth Proportional to 156,713.70, 235,200.15 and 72,603.30

Step by Step Solution

1. Step 1: Write the proportion equation
   156,713.70 : 235,200.15 = 72,603.30 : x
2. Step 2: Convert to fraction form
   156,713.70/235,200.15 = 72,603.30/x
3. Step 3: Cross multiply
   156,713.70x = 235,200.15 × 72,603.30
4. Step 4: Simplify right side
   156,713.70x = 17,076,307,050.50
5. Step 5: Solve for x
   x = 17,076,307,050.50/156,713.70
6. Step 6: Final answer
   x = 108,964.99