Finding the Fourth Proportional to 156,384.84, 215,839.98 and 89,316.84

Step by Step Solution

1. Step 1: Write the proportion equation
   156,384.84 : 215,839.98 = 89,316.84 : x
2. Step 2: Convert to fraction form
   156,384.84/215,839.98 = 89,316.84/x
3. Step 3: Cross multiply
   156,384.84x = 215,839.98 × 89,316.84
4. Step 4: Simplify right side
   156,384.84x = 19,278,144,959.26
5. Step 5: Solve for x
   x = 19,278,144,959.26/156,384.84
6. Step 6: Final answer
   x = 123,273.75