Finding the Fourth Proportional to 119,141.64, 164,415.69 and 65,430.18

Step by Step Solution

1. Step 1: Write the proportion equation
   119,141.64 : 164,415.69 = 65,430.18 : x
2. Step 2: Convert to fraction form
   119,141.64/164,415.69 = 65,430.18/x
3. Step 3: Cross multiply
   119,141.64x = 164,415.69 × 65,430.18
4. Step 4: Simplify right side
   119,141.64x = 10,757,748,191.52
5. Step 5: Solve for x
   x = 10,757,748,191.52/119,141.64
6. Step 6: Final answer
   x = 90,293.77