Finding the Fourth Proportional to 117,213, 161,753.78 and 63,498.23

Step by Step Solution

1. Step 1: Write the proportion equation
   117,213 : 161,753.78 = 63,498.23 : x
2. Step 2: Convert to fraction form
   117,213/161,753.78 = 63,498.23/x
3. Step 3: Cross multiply
   117,213x = 161,753.78 × 63,498.23
4. Step 4: Simplify right side
   117,213x = 10,271,078,725.81
5. Step 5: Solve for x
   x = 10,271,078,725.81/117,213
6. Step 6: Final answer
   x = 87,627.47