Finding the Fourth Proportional to 42,085.54, 63,117.51 and 12,496.51

Step by Step Solution

1. Step 1: Write the proportion equation
   42,085.54 : 63,117.51 = 12,496.51 : x
2. Step 2: Convert to fraction form
   42,085.54/63,117.51 = 12,496.51/x
3. Step 3: Cross multiply
   42,085.54x = 63,117.51 × 12,496.51
4. Step 4: Simplify right side
   42,085.54x = 788,748,697.22
5. Step 5: Solve for x
   x = 788,748,697.22/42,085.54
6. Step 6: Final answer
   x = 18,741.56