Finding the Fourth Proportional to 156,413.42, 215,847.87 and 88,429.34

Step by Step Solution

1. Step 1: Write the proportion equation
   156,413.42 : 215,847.87 = 88,429.34 : x
2. Step 2: Convert to fraction form
   156,413.42/215,847.87 = 88,429.34/x
3. Step 3: Cross multiply
   156,413.42x = 215,847.87 × 88,429.34
4. Step 4: Simplify right side
   156,413.42x = 19,087,284,684.51
5. Step 5: Solve for x
   x = 19,087,284,684.51/156,413.42
6. Step 6: Final answer
   x = 122,030.99