Finding the Fourth Proportional to 109,061.40, 150,506.28 and 61,312.08

Step by Step Solution

1. Step 1: Write the proportion equation
   109,061.40 : 150,506.28 = 61,312.08 : x
2. Step 2: Convert to fraction form
   109,061.40/150,506.28 = 61,312.08/x
3. Step 3: Cross multiply
   109,061.40x = 150,506.28 × 61,312.08
4. Step 4: Simplify right side
   109,061.40x = 9,227,853,079.86
5. Step 5: Solve for x
   x = 9,227,853,079.86/109,061.40
6. Step 6: Final answer
   x = 84,611.54