Finding the Fourth Proportional to 109,298.31, 150,828.72 and 61,550.63

Step by Step Solution

1. Step 1: Write the proportion equation
   109,298.31 : 150,828.72 = 61,550.63 : x
2. Step 2: Convert to fraction form
   109,298.31/150,828.72 = 61,550.63/x
3. Step 3: Cross multiply
   109,298.31x = 150,828.72 × 61,550.63
4. Step 4: Simplify right side
   109,298.31x = 9,283,602,738.09
5. Step 5: Solve for x
   x = 9,283,602,738.09/109,298.31
6. Step 6: Final answer
   x = 84,938.21