Finding the Fourth Proportional to 109,480.15, 164,312.49 and 42,966.99

Step by Step Solution

1. Step 1: Write the proportion equation
   109,480.15 : 164,312.49 = 42,966.99 : x
2. Step 2: Convert to fraction form
   109,480.15/164,312.49 = 42,966.99/x
3. Step 3: Cross multiply
   109,480.15x = 164,312.49 × 42,966.99
4. Step 4: Simplify right side
   109,480.15x = 7,060,013,275.83
5. Step 5: Solve for x
   x = 7,060,013,275.83/109,480.15
6. Step 6: Final answer
   x = 64,486.70