Finding the Fourth Proportional to 118,827, 178,256.30 and 55,638.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,827 : 178,256.30 = 55,638.50 : x
2. Step 2: Convert to fraction form
   118,827/178,256.30 = 55,638.50/x
3. Step 3: Cross multiply
   118,827x = 178,256.30 × 55,638.50
4. Step 4: Simplify right side
   118,827x = 9,917,911,978.08
5. Step 5: Solve for x
   x = 9,917,911,978.08/118,827
6. Step 6: Final answer
   x = 83,465.14