Finding the Fourth Proportional to 109,510.32, 164,266.80 and 42,981.78

Step by Step Solution

1. Step 1: Write the proportion equation
   109,510.32 : 164,266.80 = 42,981.78 : x
2. Step 2: Convert to fraction form
   109,510.32/164,266.80 = 42,981.78/x
3. Step 3: Cross multiply
   109,510.32x = 164,266.80 × 42,981.78
4. Step 4: Simplify right side
   109,510.32x = 7,060,479,458.90
5. Step 5: Solve for x
   x = 7,060,479,458.90/109,510.32
6. Step 6: Final answer
   x = 64,473.19