Finding the Fourth Proportional to 109,566.58, 151,209 and 61,802.50

Step by Step Solution

1. Step 1: Write the proportion equation
   109,566.58 : 151,209 = 61,802.50 : x
2. Step 2: Convert to fraction form
   109,566.58/151,209 = 61,802.50/x
3. Step 3: Cross multiply
   109,566.58x = 151,209 × 61,802.50
4. Step 4: Simplify right side
   109,566.58x = 9,345,094,222.50
5. Step 5: Solve for x
   x = 9,345,094,222.50/109,566.58
6. Step 6: Final answer
   x = 85,291.47