Finding the Fourth Proportional to 60,811,778,804.86, 91,153,814,820 and 20,460,621,645.01

Step by Step Solution

1. Step 1: Write the proportion equation
   60,811,778,804.86 : 91,153,814,820 = 20,460,621,645.01 : x
2. Step 2: Convert to fraction form
   60,811,778,804.86/91,153,814,820 = 20,460,621,645.01/x
3. Step 3: Cross multiply
   60,811,778,804.86x = 91,153,814,820 × 20,460,621,645.01
4. Step 4: Simplify right side
   60,811,778,804.86x = 1,865,063,716,531,325,108,224
5. Step 5: Solve for x
   x = 1,865,063,716,531,325,108,224/60,811,778,804.86
6. Step 6: Final answer
   x = 30,669,448,471.75