Finding the Fourth Proportional to 117,733.16, 162,518.82 and 72,429.50

Step by Step Solution

1. Step 1: Write the proportion equation
   117,733.16 : 162,518.82 = 72,429.50 : x
2. Step 2: Convert to fraction form
   117,733.16/162,518.82 = 72,429.50/x
3. Step 3: Cross multiply
   117,733.16x = 162,518.82 × 72,429.50
4. Step 4: Simplify right side
   117,733.16x = 11,771,156,873.19
5. Step 5: Solve for x
   x = 11,771,156,873.19/117,733.16
6. Step 6: Final answer
   x = 99,981.66