Finding the Fourth Proportional to 222,619.50, 333,948.69 and 56,407.50

Step by Step Solution

1. Step 1: Write the proportion equation
   222,619.50 : 333,948.69 = 56,407.50 : x
2. Step 2: Convert to fraction form
   222,619.50/333,948.69 = 56,407.50/x
3. Step 3: Cross multiply
   222,619.50x = 333,948.69 × 56,407.50
4. Step 4: Simplify right side
   222,619.50x = 18,837,210,731.18
5. Step 5: Solve for x
   x = 18,837,210,731.18/222,619.50
6. Step 6: Final answer
   x = 84,616.18