Finding the Fourth Proportional to 100,384.16, 138,527.74 and 55,061.74

Step by Step Solution

1. Step 1: Write the proportion equation
   100,384.16 : 138,527.74 = 55,061.74 : x
2. Step 2: Convert to fraction form
   100,384.16/138,527.74 = 55,061.74/x
3. Step 3: Cross multiply
   100,384.16x = 138,527.74 × 55,061.74
4. Step 4: Simplify right side
   100,384.16x = 7,627,577,710.03
5. Step 5: Solve for x
   x = 7,627,577,710.03/100,384.16
6. Step 6: Final answer
   x = 75,983.88