Finding the Fourth Proportional to 279,062.82, 418,554.80 and 89,498.55

Step by Step Solution

1. Step 1: Write the proportion equation
   279,062.82 : 418,554.80 = 89,498.55 : x
2. Step 2: Convert to fraction form
   279,062.82/418,554.80 = 89,498.55/x
3. Step 3: Cross multiply
   279,062.82x = 418,554.80 × 89,498.55
4. Step 4: Simplify right side
   279,062.82x = 37,460,045,602.77
5. Step 5: Solve for x
   x = 37,460,045,602.77/279,062.82
6. Step 6: Final answer
   x = 134,235.17