Finding the Fourth Proportional to 139,928,440.50, 193,163,167.35 and 90,392,967.05

Step by Step Solution

1. Step 1: Write the proportion equation
   139,928,440.50 : 193,163,167.35 = 90,392,967.05 : x
2. Step 2: Convert to fraction form
   139,928,440.50/193,163,167.35 = 90,392,967.05/x
3. Step 3: Cross multiply
   139,928,440.50x = 193,163,167.35 × 90,392,967.05
4. Step 4: Simplify right side
   139,928,440.50x = 17,460,591,820,576,370
5. Step 5: Solve for x
   x = 17,460,591,820,576,370/139,928,440.50
6. Step 6: Final answer
   x = 124,782,294.14