Finding the Fourth Proportional to 156,953.86, 216,597.69 and 85,333.93

Step by Step Solution

1. Step 1: Write the proportion equation
   156,953.86 : 216,597.69 = 85,333.93 : x
2. Step 2: Convert to fraction form
   156,953.86/216,597.69 = 85,333.93/x
3. Step 3: Cross multiply
   156,953.86x = 216,597.69 × 85,333.93
4. Step 4: Simplify right side
   156,953.86x = 18,483,132,116.62
5. Step 5: Solve for x
   x = 18,483,132,116.62/156,953.86
6. Step 6: Final answer
   x = 117,761.56