Finding the Fourth Proportional to 109,399.28, 150,973.54 and 61,654.10

Step by Step Solution

1. Step 1: Write the proportion equation
   109,399.28 : 150,973.54 = 61,654.10 : x
2. Step 2: Convert to fraction form
   109,399.28/150,973.54 = 61,654.10/x
3. Step 3: Cross multiply
   109,399.28x = 150,973.54 × 61,654.10
4. Step 4: Simplify right side
   109,399.28x = 9,308,136,823.51
5. Step 5: Solve for x
   x = 9,308,136,823.51/109,399.28
6. Step 6: Final answer
   x = 85,084.08