Finding the Fourth Proportional to 134,666.29, 185,839 and 78,109.93

Step by Step Solution

1. Step 1: Write the proportion equation
   134,666.29 : 185,839 = 78,109.93 : x
2. Step 2: Convert to fraction form
   134,666.29/185,839 = 78,109.93/x
3. Step 3: Cross multiply
   134,666.29x = 185,839 × 78,109.93
4. Step 4: Simplify right side
   134,666.29x = 14,515,871,281.27
5. Step 5: Solve for x
   x = 14,515,871,281.27/134,666.29
6. Step 6: Final answer
   x = 107,791.42