Finding the Fourth Proportional to 136,040.04, 204,129.18 and 61,145.10

Step by Step Solution

1. Step 1: Write the proportion equation
   136,040.04 : 204,129.18 = 61,145.10 : x
2. Step 2: Convert to fraction form
   136,040.04/204,129.18 = 61,145.10/x
3. Step 3: Cross multiply
   136,040.04x = 204,129.18 × 61,145.10
4. Step 4: Simplify right side
   136,040.04x = 12,481,499,124.02
5. Step 5: Solve for x
   x = 12,481,499,124.02/136,040.04
6. Step 6: Final answer
   x = 91,748.72