Finding the Fourth Proportional to 103,300, 142,554 and 56,196

Step by Step Solution

1. Step 1: Write the proportion equation
   103,300 : 142,554 = 56,196 : x
2. Step 2: Convert to fraction form
   103,300/142,554 = 56,196/x
3. Step 3: Cross multiply
   103,300x = 142,554 × 56,196
4. Step 4: Simplify right side
   103,300x = 8,010,964,584
5. Step 5: Solve for x
   x = 8,010,964,584/103,300
6. Step 6: Final answer
   x = 77,550.48