Finding the Fourth Proportional to 55,186,777.60, 82,709,307.60 and 42,343,620.10

Step by Step Solution

1. Step 1: Write the proportion equation
   55,186,777.60 : 82,709,307.60 = 42,343,620.10 : x
2. Step 2: Convert to fraction form
   55,186,777.60/82,709,307.60 = 42,343,620.10/x
3. Step 3: Cross multiply
   55,186,777.60x = 82,709,307.60 × 42,343,620.10
4. Step 4: Simplify right side
   55,186,777.60x = 3,502,211,499,748,442.50
5. Step 5: Solve for x
   x = 3,502,211,499,748,442.50/55,186,777.60
6. Step 6: Final answer
   x = 63,461,061.73