Finding the Fourth Proportional to 156,770.72, 216,274.20 and 93,071.60

Step by Step Solution

1. Step 1: Write the proportion equation
   156,770.72 : 216,274.20 = 93,071.60 : x
2. Step 2: Convert to fraction form
   156,770.72/216,274.20 = 93,071.60/x
3. Step 3: Cross multiply
   156,770.72x = 216,274.20 × 93,071.60
4. Step 4: Simplify right side
   156,770.72x = 20,128,985,832.72
5. Step 5: Solve for x
   x = 20,128,985,832.72/156,770.72
6. Step 6: Final answer
   x = 128,397.61