Finding the Fourth Proportional to 142,264.89, 213,397.35 and 42,495.18

Step by Step Solution

1. Step 1: Write the proportion equation
   142,264.89 : 213,397.35 = 42,495.18 : x
2. Step 2: Convert to fraction form
   142,264.89/213,397.35 = 42,495.18/x
3. Step 3: Cross multiply
   142,264.89x = 213,397.35 × 42,495.18
4. Step 4: Simplify right side
   142,264.89x = 9,068,358,799.77
5. Step 5: Solve for x
   x = 9,068,358,799.77/142,264.89
6. Step 6: Final answer
   x = 63,742.77