Finding the Fourth Proportional to 134,857,680.72, 186,103,599.60 and 72,978,019.26

Step by Step Solution

1. Step 1: Write the proportion equation
   134,857,680.72 : 186,103,599.60 = 72,978,019.26 : x
2. Step 2: Convert to fraction form
   134,857,680.72/186,103,599.60 = 72,978,019.26/x
3. Step 3: Cross multiply
   134,857,680.72x = 186,103,599.60 × 72,978,019.26
4. Step 4: Simplify right side
   134,857,680.72x = 13,581,472,075,964,128
5. Step 5: Solve for x
   x = 13,581,472,075,964,128/134,857,680.72
6. Step 6: Final answer
   x = 100,709,666.69