Finding the Fourth Proportional to 138,060.61, 190,429.98 and 89,575.92

Step by Step Solution

1. Step 1: Write the proportion equation
   138,060.61 : 190,429.98 = 89,575.92 : x
2. Step 2: Convert to fraction form
   138,060.61/190,429.98 = 89,575.92/x
3. Step 3: Cross multiply
   138,060.61x = 190,429.98 × 89,575.92
4. Step 4: Simplify right side
   138,060.61x = 17,057,940,654.08
5. Step 5: Solve for x
   x = 17,057,940,654.08/138,060.61
6. Step 6: Final answer
   x = 123,554.00