Finding the Fourth Proportional to 465,574,667.81, 698,480,624.60 and 138,062,144.93

Step by Step Solution

1. Step 1: Write the proportion equation
   465,574,667.81 : 698,480,624.60 = 138,062,144.93 : x
2. Step 2: Convert to fraction form
   465,574,667.81/698,480,624.60 = 138,062,144.93/x
3. Step 3: Cross multiply
   465,574,667.81x = 698,480,624.60 × 138,062,144.93
4. Step 4: Simplify right side
   465,574,667.81x = 96,433,733,225,895,744
5. Step 5: Solve for x
   x = 96,433,733,225,895,744/465,574,667.81
6. Step 6: Final answer
   x = 207,128,393.99