Finding the Fourth Proportional to 142,199.34, 196,234.47 and 78,536.82

Step by Step Solution

1. Step 1: Write the proportion equation
   142,199.34 : 196,234.47 = 78,536.82 : x
2. Step 2: Convert to fraction form
   142,199.34/196,234.47 = 78,536.82/x
3. Step 3: Cross multiply
   142,199.34x = 196,234.47 × 78,536.82
4. Step 4: Simplify right side
   142,199.34x = 15,411,631,248.19
5. Step 5: Solve for x
   x = 15,411,631,248.19/142,199.34
6. Step 6: Final answer
   x = 108,380.47