Finding the Fourth Proportional to 78,155.98, 117,111.03 and 60,429.94

Step by Step Solution

1. Step 1: Write the proportion equation
   78,155.98 : 117,111.03 = 60,429.94 : x
2. Step 2: Convert to fraction form
   78,155.98/117,111.03 = 60,429.94/x
3. Step 3: Cross multiply
   78,155.98x = 117,111.03 × 60,429.94
4. Step 4: Simplify right side
   78,155.98x = 7,077,012,516.24
5. Step 5: Solve for x
   x = 7,077,012,516.24/78,155.98
6. Step 6: Final answer
   x = 90,549.85