Finding the Fourth Proportional to 10,128,973,602, 13,978,065,642.55 and 5,612,928,090.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,128,973,602 : 13,978,065,642.55 = 5,612,928,090.06 : x
2. Step 2: Convert to fraction form
   10,128,973,602/13,978,065,642.55 = 5,612,928,090.06/x
3. Step 3: Cross multiply
   10,128,973,602x = 13,978,065,642.55 × 5,612,928,090.06
4. Step 4: Simplify right side
   10,128,973,602x = 78,457,877,289,771,483,136
5. Step 5: Solve for x
   x = 78,457,877,289,771,483,136/10,128,973,602
6. Step 6: Final answer
   x = 7,745,886,244.02