Finding the Fourth Proportional to 162,335.61, 243,552.69 and 78,071.86

Step by Step Solution

1. Step 1: Write the proportion equation
   162,335.61 : 243,552.69 = 78,071.86 : x
2. Step 2: Convert to fraction form
   162,335.61/243,552.69 = 78,071.86/x
3. Step 3: Cross multiply
   162,335.61x = 243,552.69 × 78,071.86
4. Step 4: Simplify right side
   162,335.61x = 19,014,611,820.74
5. Step 5: Solve for x
   x = 19,014,611,820.74/162,335.61
6. Step 6: Final answer
   x = 117,131.49