Finding the Fourth Proportional to 223,128.59, 334,692.86 and 56,916.59

Step by Step Solution

1. Step 1: Write the proportion equation
   223,128.59 : 334,692.86 = 56,916.59 : x
2. Step 2: Convert to fraction form
   223,128.59/334,692.86 = 56,916.59/x
3. Step 3: Cross multiply
   223,128.59x = 334,692.86 × 56,916.59
4. Step 4: Simplify right side
   223,128.59x = 19,049,574,330.50
5. Step 5: Solve for x
   x = 19,049,574,330.50/223,128.59
6. Step 6: Final answer
   x = 85,374.87