Finding the Fourth Proportional to 138,089,096.87, 190,625,099.02 and 91,074,061.60

Step by Step Solution

1. Step 1: Write the proportion equation
   138,089,096.87 : 190,625,099.02 = 91,074,061.60 : x
2. Step 2: Convert to fraction form
   138,089,096.87/190,625,099.02 = 91,074,061.60/x
3. Step 3: Cross multiply
   138,089,096.87x = 190,625,099.02 × 91,074,061.60
4. Step 4: Simplify right side
   138,089,096.87x = 17,361,002,009,949,332
5. Step 5: Solve for x
   x = 17,361,002,009,949,332/138,089,096.87
6. Step 6: Final answer
   x = 125,723,191.79