Finding the Fourth Proportional to 117,885.47, 162,633.89 and 72,549.77

Step by Step Solution

1. Step 1: Write the proportion equation
   117,885.47 : 162,633.89 = 72,549.77 : x
2. Step 2: Convert to fraction form
   117,885.47/162,633.89 = 72,549.77/x
3. Step 3: Cross multiply
   117,885.47x = 162,633.89 × 72,549.77
4. Step 4: Simplify right side
   117,885.47x = 11,799,050,681.91
5. Step 5: Solve for x
   x = 11,799,050,681.91/117,885.47
6. Step 6: Final answer
   x = 100,089.10