Finding the Fourth Proportional to 118,085.84, 162,961.77 and 72,152.96

Step by Step Solution

1. Step 1: Write the proportion equation
   118,085.84 : 162,961.77 = 72,152.96 : x
2. Step 2: Convert to fraction form
   118,085.84/162,961.77 = 72,152.96/x
3. Step 3: Cross multiply
   118,085.84x = 162,961.77 × 72,152.96
4. Step 4: Simplify right side
   118,085.84x = 11,758,174,072.34
5. Step 5: Solve for x
   x = 11,758,174,072.34/118,085.84
6. Step 6: Final answer
   x = 99,573.11