Finding the Fourth Proportional to 109,776.18, 151,498.71 and 66,772.47

Step by Step Solution

1. Step 1: Write the proportion equation
   109,776.18 : 151,498.71 = 66,772.47 : x
2. Step 2: Convert to fraction form
   109,776.18/151,498.71 = 66,772.47/x
3. Step 3: Cross multiply
   109,776.18x = 151,498.71 × 66,772.47
4. Step 4: Simplify right side
   109,776.18x = 10,115,943,068.51
5. Step 5: Solve for x
   x = 10,115,943,068.51/109,776.18
6. Step 6: Final answer
   x = 92,150.62