Finding the Fourth Proportional to 42,213, 63,341.37 and 21,436.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,213 : 63,341.37 = 21,436.50 : x
2. Step 2: Convert to fraction form
   42,213/63,341.37 = 21,436.50/x
3. Step 3: Cross multiply
   42,213x = 63,341.37 × 21,436.50
4. Step 4: Simplify right side
   42,213x = 1,357,817,278.01
5. Step 5: Solve for x
   x = 1,357,817,278.01/42,213
6. Step 6: Final answer
   x = 32,165.86