Finding the Fourth Proportional to 88,927.30, 133,062.90 and 81,054.10

Step by Step Solution

1. Step 1: Write the proportion equation
   88,927.30 : 133,062.90 = 81,054.10 : x
2. Step 2: Convert to fraction form
   88,927.30/133,062.90 = 81,054.10/x
3. Step 3: Cross multiply
   88,927.30x = 133,062.90 × 81,054.10
4. Step 4: Simplify right side
   88,927.30x = 10,785,293,602.89
5. Step 5: Solve for x
   x = 10,785,293,602.89/88,927.30
6. Step 6: Final answer
   x = 121,282.14