Finding the Fourth Proportional to 153,793, 212,247.30 and 86,737.96

Step by Step Solution

1. Step 1: Write the proportion equation
   153,793 : 212,247.30 = 86,737.96 : x
2. Step 2: Convert to fraction form
   153,793/212,247.30 = 86,737.96/x
3. Step 3: Cross multiply
   153,793x = 212,247.30 × 86,737.96
4. Step 4: Simplify right side
   153,793x = 18,409,897,817.51
5. Step 5: Solve for x
   x = 18,409,897,817.51/153,793
6. Step 6: Final answer
   x = 119,705.69