Finding the Fourth Proportional to 156,390.80, 234,404.69 and 71,973.71

Step by Step Solution

1. Step 1: Write the proportion equation
   156,390.80 : 234,404.69 = 71,973.71 : x
2. Step 2: Convert to fraction form
   156,390.80/234,404.69 = 71,973.71/x
3. Step 3: Cross multiply
   156,390.80x = 234,404.69 × 71,973.71
4. Step 4: Simplify right side
   156,390.80x = 16,870,974,188.61
5. Step 5: Solve for x
   x = 16,870,974,188.61/156,390.80
6. Step 6: Final answer
   x = 107,877.03